Premolar forceps are dental extraction instruments designed to grip and remove premolar teeth (bicuspids) from the alveolar bone. Upper premolar forceps such as the #150 feature a slight S-curve that aligns the beak with the long axis of maxillary premolars, while lower premolar forceps such as the #151 angle the beak at approximately 90 degrees to access mandibular premolars from above. The beak geometry, hinge type, and handle profile of each premolar forceps number correspond directly to the root anatomy of its target tooth single-rooted for mandibular premolars and frequently dual-rooted for maxillary first premolars.
What Are Premolar Forceps?
Premolar forceps are specialized dental extraction forceps engineered to extract first and second premolars from both the maxillary (upper) and mandibular (lower) arches. Each premolar forceps consists of 3 components: the beak (the working end that grips the tooth at or below the cementoenamel junction), the hinge or joint (the fulcrum that transfers force from handle to beak), and the handle (the grip surface controlled by the operator). Premolar teeth occupy positions 4 and 5 in each dental quadrant, sitting distal to the canines and mesial to the first molars. The human dentition contains 8 premolars 4 maxillary and 4 mandibular and each arch requires a different forceps geometry because the bone density, root count, and access angle differ between the upper and lower jaw.
Premolar forceps differ from molar forceps because premolar roots are thinner, shorter, and usually fewer in number. Molar forceps require split beaks or cowhorn designs to engage bifurcation points between 2 or 3 roots. Premolar forceps use smooth, symmetrical, conical beaks that adapt to the single conical or dual root structure of bicuspids without engaging furcation anatomy. The #150 upper universal forceps and #151 lower universal forceps are the 2 most commonly used premolar forceps numbers in American-pattern extraction sets, and both work for left and right quadrants without requiring separate instruments.
Why Does Premolar Anatomy Determine Forceps Selection?
Premolar root anatomy dictates which forceps number delivers the safest, most controlled extraction. The maxillary first premolar typically has 2 roots 1 buccal and 1 palatal that bifurcate at the apical third or half. These roots are thin and prone to fracture during extraction. The maxillary second premolar usually has 1 root, though 2-rooted variants occur. Both mandibular first and second premolars are single-rooted in most patients. The root cross-section of the mandibular second premolar is conical, which allows rotational extraction movements. The maxillary first premolar's oval cross-section with dual roots prohibits rotation and requires buccopalatal rocking to expand the socket without snapping the fragile apices.
Forceps beak contour must mirror the cervical anatomy of the target premolar. A beak that is too wide slips off the tooth; a beak that is too narrow concentrates force on a point and fractures the crown. The concave inner surfaces of premolar forceps beaks create 2-point contact on the buccal and lingual (or palatal) surfaces of the root, distributing extraction force evenly across the periodontal ligament.
What Are the Types of Premolar Forceps?
Premolar forceps are classified by arch (upper vs. lower), pattern (American vs. English), and clinical application (adult vs. pediatric, standard vs. atraumatic). Each type has a specific forceps number assigned by the manufacturer or universal naming system.

What Are Upper Premolar Forceps?
Upper premolar forceps are maxillary extraction instruments with a slight S-shaped curve between the handle and beak. This double curve positions the beak parallel to the long axis of the maxillary premolar while keeping the handle clear of the lower lip and opposing teeth. The beaks of upper premolar forceps are smooth, concave, and mirror-imaged the buccal and palatal beak faces are identical which allows a single instrument to extract both right and left upper premolars.
Key upper premolar forceps numbers include:
-
#150 (American Pattern): The maxillary universal forceps. The #150 extracts upper incisors, canines, premolars, and retained roots. Its serrated conical beaks adapt apical to the cervical line on single-rooted and 2-rooted premolars. The #150 functions in both left and right quadrants. Hu-Friedy, Premier Dental Products, and Hunza Dental all manufacture #150 forceps in surgical-grade stainless steel.
-
#150A (American Pattern): A narrower-beaked variant of the #150 designed specifically for upper premolars. The #150A provides a tighter grip on the smaller mesiodistal diameter of the premolar neck compared to the standard #150.
-
#150S (American Pedo Pattern): A scaled-down pediatric version used on upper primary premolars and deciduous molars. The smaller beaks accommodate the reduced crown size of primary teeth.
-
#150AF (American Atraumatic): An atraumatic variant with finer, tapered beaks that engage the root surface more apically, reducing trauma to the buccal bone plate. The atraumatic design preserves alveolar bone for future implant placement or orthodontic tooth movement.
-
#99 (American Pattern): Features a straight handle and beaks contoured to follow facial and lingual root contours. The #99 is universal for right and left quadrants and extracts both anteriors and premolars.
-
English Pattern No. 7: The English-pattern upper premolar forceps. English-pattern instruments use a lap joint with a visible screw or pin that places the fulcrum closer to the beak, increasing mechanical advantage. English No. 7 extracts upper premolars and roots.
-
English Pattern No. 35: A specialized English-pattern upper premolar forceps with far-reaching beaks designed for deep engagement below the gingival margin.
What Are Lower Premolar Forceps?
Lower premolar forceps are mandibular extraction instruments with a near 90-degree angle between the handle and the beak. This perpendicular angle allows the operator to direct extraction force downward onto the mandibular premolar while maintaining a straight wrist posture. The beaks of lower premolar forceps curve inward to adapt to the buccal and lingual surfaces of mandibular premolars.

Key lower premolar forceps numbers include:
-
#151 (American Pattern): The mandibular universal forceps. The #151 extracts lower incisors, canines, premolars, and retained roots. Its symmetrical beaks curve downward to grip the buccal and lingual surfaces of lower teeth. Hu-Friedy describes the #151 as a Presidential™ series instrument with a scissors hinge that distributes forces equally. The #151 is the lower counterpart to the #150.
-
#151A (American Pattern): A premolar-specific adaptation of the #151 with beaks contoured for the wider crown diameter of mandibular premolars. The #151A provides a better anatomical fit on lower bicuspids compared to the standard #151.
-
#151S (American Pedo Pattern): A pediatric mandibular forceps for lower primary teeth and roots. The smaller beaks reduce the risk of damaging developing permanent tooth buds beneath deciduous premolars.
-
#151AS (American Atraumatic Split-Beak): An atraumatic variant with split beaks that improve stabilization on rotated lower premolars, fractured teeth, and irregular root anatomies.
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#103 (American Pattern): A straight-handle, straight-beak mandibular forceps for lower anteriors and premolars. The #103 differs from the #151 by eliminating the beak angle, which some operators prefer for direct downward traction.
-
English Pattern No. 13: The English-pattern lower premolar forceps. The lap-joint hinge places the fulcrum closer to the working end for increased leverage on mandibular premolars.
-
English Pattern No. 75: Another English-pattern lower premolar forceps with a broader beak profile for second premolars.
-
English Pattern No. 8: An English extracting forceps used for lower premolar extractions, available in standard and diamond-grit beak variations for enhanced grip.
What Is the Difference Between Upper Premolar Forceps and Lower Premolar Forceps?
The fundamental difference between upper and lower premolar forceps is the beak-to-handle angle. Upper premolar forceps (e.g., #150) have a slight S-curve of approximately 30–45 degrees, while lower premolar forceps (e.g., #151) have a sharp bend of approximately 90 degrees. This geometric difference exists because upper teeth are extracted with a downward-and-outward motion applied from below the tooth, while lower teeth are extracted with an upward-and-outward motion applied from above the tooth.
|
Feature |
Upper Premolar Forceps (#150) |
Lower Premolar Forceps (#151) |
|
Beak-to-handle angle |
30–45° S-curve |
~90° perpendicular bend |
|
Target arch |
Maxillary (upper jaw) |
Mandibular (lower jaw) |
|
Target teeth |
Upper incisors, canines, premolars, roots |
Lower incisors, canines, premolars, roots |
|
Beak symmetry |
Mirror-image (buccal = palatal) |
Symmetrical (buccal = lingual) |
|
Root anatomy addressed |
Single-root and dual-root premolars |
Predominantly single-root premolars |
|
Primary extraction motion |
Buccopalatal rocking, traction |
Buccolingual rocking, limited rotation |
|
Quadrant use |
Universal left and right |
Universal left and right |
|
American-pattern hinge |
Smooth box joint |
Smooth box joint |
|
Common material |
Surgical-grade stainless steel |
Surgical-grade stainless steel |
The higher forceps number (#151) sits lower in the mouth this is a simple mnemonic. The #150 is the upper universal; the #151 is the lower universal. Both instruments are universal for left and right quadrants, so a dental practice needs only 1 of each to cover premolar extractions on both sides of either arch.
What Is the Difference Between American Pattern and English Pattern Premolar Forceps?
American-pattern premolar forceps use a box joint (smooth hinge with no visible screw or pin), while English-pattern premolar forceps use a lap joint (visible screw or pin holding the 2 arms together). The hinge type changes the mechanical leverage, balance, and tactile feedback of the instrument.
American-pattern forceps place the fulcrum farther from the beak, which provides greater handle spread and wider beak opening. English-pattern forceps place the fulcrum closer to the beak, which increases mechanical advantage and requires less hand force to generate the same extraction pressure at the tooth. American-pattern forceps dominate the US market, while English-pattern forceps are more common in the UK, Europe, and South Asia.
|
Feature |
American Pattern |
English Pattern |
|
Hinge type |
Box joint (smooth, no visible pin) |
Lap joint (visible screw/pin) |
|
Fulcrum position |
Farther from beak |
Closer to beak |
|
Mechanical advantage |
Moderate |
Higher |
|
Handle spread |
Wider opening |
Narrower opening |
|
Tactile feedback |
Distributed |
Concentrated |
|
Upper premolar number |
#150, #150A, #99 |
No. 7, No. 35 |
|
Lower premolar number |
#151, #151A, #103 |
No. 13, No. 75, No. 8 |
|
Market prevalence (US) |
Primary |
Secondary |
Hunza Dental manufactures both American-pattern and English-pattern extraction forceps. The choice between patterns is a matter of clinical training and operator preference; extraction outcomes do not differ significantly between patterns when the correct forceps number is matched to the correct tooth.
How Does a Premolar Extraction with Forceps Work?
Premolar extraction with forceps follows a sequential protocol of anesthesia, soft-tissue release, forceps application, luxation, and delivery. Each step reduces the periodontal attachment and expands the socket incrementally before the tooth is removed.
Step 1: Administer Local Anesthesia
The operator administers local anesthesia to block pain transmission from the premolar and surrounding tissues. Upper premolar extractions use infiltration anesthesia (buccal and palatal injections near the apex of the target tooth). Lower premolar extractions use either infiltration anesthesia or an inferior alveolar nerve block (IANB), depending on the patient's bone density and operator preference. A 2023 study at Saveetha Dental College compared infiltration vs. IANB for lower premolar extractions in 100 patients and found infiltration provided effective anesthesia with fewer complications than IANB for orthodontic premolar removal.
Step 2: Release the Gingival Attachment
The operator detaches the gingival margin from the neck of the premolar using a periosteal elevator, flat plastic, or luxator. Freeing the gingiva prevents soft-tissue tearing when the forceps beaks are advanced apically along the root surface.
Step 3: Apply a Luxator or Elevator
A 3 mm luxator is inserted into the periodontal ligament space between the premolar root and the alveolar bone. The luxator expands the socket, severs periodontal fibers, and begins mobilizing the tooth before forceps are introduced. A straight elevator (Coupland No. 1 or No. 2) can substitute for the luxator.
Step 4: Select and Seat the Premolar Forceps
The operator selects the correct forceps number based on the arch and tooth position — #150 or #150A for upper premolars, #151 or #151A for lower premolars. The beaks are placed as far apically as possible on the buccal and lingual (or palatal) root surfaces, below the cementoenamel junction. Proper seating means the beak tips contact root structure, not crown enamel. The forceps are advanced apically by squeezing the handles and rocking slightly.
Step 5: Luxate with Controlled Movements
The extraction movement pattern depends on the premolar's root anatomy:
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Upper first premolar (typically 2 roots): Gentle buccopalatal rocking. Rotation is contraindicated because the 2 thin roots resist torsional force and fracture easily. The operator applies slow, controlled buccal pressure first (toward the thinner buccal cortical plate), then palatal pressure, gradually expanding the socket.
-
Upper second premolar (typically 1 root): Buccopalatal rocking with minimal rotation. The single oval root allows limited torsional movement.
-
Lower first premolar (1 root, conical): Buccolingual rocking with limited rotation. The buccal bone plate is thinner, so initial movement is typically buccal.
-
Lower second premolar (1 root, conical): Primary rotational movement is effective because the conical root shape permits torsional displacement. Buccolingual rocking supplements rotation.
Step 6: Deliver the Tooth
Once the premolar is fully mobilized within the expanded socket, the operator applies final traction (an outward pulling force along the path of least resistance) to deliver the tooth from the alveolar bone. The socket is inspected for retained root fragments, and the extraction site is managed with gauze pressure and post-operative instructions.
What Are Common Mistakes When Using Premolar Forceps?
Premolar extraction errors typically result from forceps mismatch, improper beak placement, excessive force, or failure to assess root anatomy before extraction. Each mistake increases the risk of root fracture, alveolar bone loss, soft-tissue laceration, or damage to adjacent teeth.
Using the wrong forceps number for the arch. Applying a #150 (upper) forceps to a lower premolar or a #151 (lower) to an upper premolar misaligns the beak angle with the tooth axis and prevents apical seating. The beak slides off the root surface and grips the crown, which fractures under load.
Failing to review the periapical radiograph before extraction. The upper first premolar frequently presents 2 thin roots that bifurcate at the apical third. Without radiographic assessment, the operator may apply rotational force to a dual-rooted tooth, producing a spiral root fracture that leaves the apical fragment embedded in bone.
Applying excessive buccal force on the upper first premolar. The buccal bone plate overlying the maxillary first premolar is thin. Aggressive buccal displacement fractures the buccal plate, destroying the ridge contour needed for future implant or prosthetic treatment.
Seating the beaks on the crown instead of the root. Crown engagement concentrates force on enamel, which chips and cracks. The beaks must advance below the cementoenamel junction to contact cementum and root dentin, which tolerate compression without shattering.
Rotating a dual-rooted upper first premolar. Rotation around the long axis works only on conical, single-rooted teeth (e.g., mandibular second premolars, upper central incisors). Applying rotation to a tooth with divergent roots shears the roots apart and fractures one or both apices.
Omitting the luxation step. Skipping the luxator or elevator and going directly to forceps application forces the beaks to do all the work of severing the periodontal ligament and expanding the socket. This increases the extraction time, raises the risk of root fracture, and causes unnecessary alveolar bone trauma.
Using cowhorn forceps on premolars. Cowhorn forceps (#16, #23) are designed to engage the bifurcation of multi-rooted mandibular molars. Premolars have no bifurcation point. Applying cowhorn beaks to a single-rooted premolar splits the crown or crushes the root.
How Do You Choose the Right Premolar Forceps?
Premolar forceps selection follows a 4-step decision framework based on the arch, tooth position, root anatomy, and patient population.
Decision Framework for Premolar Forceps Selection
|
Decision Factor |
Upper Premolar |
Lower Premolar |
|
Arch |
Maxillary |
Mandibular |
|
Standard adult forceps |
#150 (American) or No. 7 (English) |
#151 (American) or No. 13 (English) |
|
Premolar-specific variant |
#150A |
#151A |
|
Atraumatic variant |
#150AF |
#151AS (split-beak) |
|
Pediatric variant |
#150S (pedo) |
#151S (pedo) |
|
Straight-beak alternative |
#99 |
#103 |
|
Root anatomy check |
Radiograph to confirm 1 vs. 2 roots |
Radiograph to confirm root curvature |
|
Extraction motion |
Buccopalatal rocking (no rotation if 2 roots) |
Buccolingual rocking ± rotation |
|
Bone consideration |
Thin buccal plate; avoid excess buccal force |
External oblique ridge reinforces buccal; lingual plate thinner |
For routine adult premolar extractions: The #150 (upper) and #151 (lower) handle the majority of cases. These 2 instruments are the minimum premolar forceps kit.
For orthodontic premolar extractions: Atraumatic variants (#150AF, #151AS) preserve alveolar bone and maintain socket integrity for subsequent tooth movement. A 2020 randomized clinical study published in the Journal of Oral and Maxillofacial Surgery compared physics forceps to conventional forceps for orthodontic premolar extraction and found physics forceps reduced intraoperative time and released hyaluronidase more consistently, promoting faster ligament breakdown.
For pediatric patients: Pedo variants (#150S, #151S) have smaller beaks that fit primary premolars and deciduous molars without damaging developing permanent tooth buds.
For linguoverted mandibular premolars: A 2022 technique published in the British Journal of Oral and Maxillofacial Surgery (the Shetye technique) demonstrated that maxillary forceps (#150) can extract linguoverted lower premolars from the lingual side when standard buccal access is blocked. This technique was used successfully on 16 patients with uneventful healing.
What Are Physics Forceps and How Do They Compare to Conventional Premolar Forceps?
Physics forceps are a first-class lever extraction system that replaces the 2-point beak grip of conventional forceps with a single beak on the lingual/palatal root surface and a "bumper" pad on the buccal alveolar ridge that acts as a fulcrum. The operator applies a slow, unrelenting rotational torque through wrist movement, and the continuous pressure releases hyaluronidase enzyme from the periodontal ligament, breaking down the attachment biochemically rather than mechanically.
|
Feature |
Conventional Premolar Forceps |
Physics Forceps |
|
Mechanism |
2-beak grip, buccolingual rocking |
1-beak + bumper fulcrum, rotational torque |
|
Force type |
Intermittent mechanical compression |
Continuous unrelenting traction |
|
Ligament breakdown |
Mechanical fiber severing |
Hyaluronidase release (biochemical) |
|
Buccal bone risk |
Moderate (depends on force control) |
Lower (bumper distributes force to ridge) |
|
Intraoperative time |
Longer (multiple rocking cycles) |
Shorter (continuous torque) |
|
Socket preservation |
Moderate |
Higher (less buccal plate disruption) |
|
Learning curve |
Standard dental training |
Requires separate technique training |
|
Cost per instrument |
$40–$90 per forceps |
$200–$400 per set |
A 2023 study published in Cureus compared physics forceps to conventional forceps for bilateral orthodontic premolar extractions in 20 patients. Both types produced comparable soft-tissue recovery and postoperative pain scores. Physics forceps demonstrated reduced intraoperative time and fewer gingival lacerations.
Conventional premolar forceps remain the standard of care for general premolar extraction. Physics forceps offer an advantage in atraumatic extraction scenarios where alveolar bone preservation is a clinical priority particularly in orthodontic, implant, and prosthetic treatment planning.
How Do You Maintain and Sterilize Premolar Forceps?
Premolar forceps require a standardized instrument reprocessing cycle after every clinical use: cleaning, inspection, lubrication, packaging, and sterilization. Skipping any step compromises either sterility or instrument longevity.
Cleaning
Rinse the forceps under running water immediately after use to remove blood, saliva, and tissue debris before contaminants dry onto the instrument surface. Submerge the forceps in an ultrasonic bath with a neutral-pH enzymatic cleaner (pH 7) for 20–30 minutes. Neutral-pH detergents prevent the 2 types of chemical damage to stainless steel: acidic detergents (pH below 6) pit the chromium oxide passive layer and cause black staining, while alkaline detergents (pH above 8) deposit brown phosphate stains that interfere with hinge movement.
Inspection
Open the forceps fully and inspect the beak tips for alignment, chips, and bending. Verify that the hinge operates smoothly without lateral play. Check for corrosion spots on the beak interior and handle knurling. Damaged or misaligned premolar forceps must be repaired or replaced before resterilization.
Lubrication
Apply an instrument-grade, water-soluble lubricant to the hinge mechanism. Lubricant protects the hinge from corrosion during autoclaving and maintains smooth articulation over repeated sterilization cycles. Oil-based lubricants are contraindicated because they form a hydrophobic barrier that prevents steam penetration and compromises sterilization.
Packaging
Place each forceps in an individual sterilization pouch with the hinge in the open position. Closed hinges trap air and prevent steam from reaching the articulating surfaces. Separating stainless steel forceps from carbide instruments in the sterilization pouch prevents galvanic corrosion between dissimilar metals.
Sterilization (Autoclaving)
Autoclave premolar forceps at 121°C (250°F) at 15 psi for 15–20 minutes, or at 134°C (273°F) at 30 psi for 3 minutes (flash sterilization). Steam sterilization kills bacteria, viruses, fungi, and spores. Allow the instruments to dry completely inside the autoclave before removal. Never exceed 177°C (350°F), as temperatures above this threshold damage the temper of the stainless steel and soften the beak tips.
What Materials Are Premolar Forceps Made From?
Premolar forceps are manufactured from medical-grade stainless steel, most commonly AISI 420 or AISI 440A martensitic stainless steel. These alloys contain 12–14% chromium for corrosion resistance, 0.15–0.75% carbon for hardness, and trace amounts of nickel and molybdenum for strength. The chromium content forms a passive chromium oxide layer on the instrument surface that resists rust, pitting, and discoloration under repeated autoclave cycles.
German-forged stainless steel is the industry benchmark for surgical instrument manufacturing. The forging process compresses the metal grain structure, increasing tensile strength and fatigue resistance compared to cast or machined alternatives. Forged forceps maintain beak alignment and hinge integrity over thousands of extraction-and-sterilization cycles.
Titanium-coated premolar forceps add a thin titanium nitride layer over the stainless steel substrate. The coating increases surface hardness (approximately 2,000 HV compared to 550 HV for uncoated stainless steel), reduces friction between the beak and the tooth, and provides a non-reflective gold surface that reduces glare under operatory lighting.
What Are the Key Specifications of Premolar Forceps?
|
Specification |
Typical Value |
|
Overall length |
170–185 mm (6.7–7.3 inches) |
|
Beak width |
6–10 mm (varies by number) |
|
Beak depth (apical reach) |
12–18 mm |
|
Handle surface |
Knurled, cross-knurled, or diamond-grip |
|
Hinge type |
Box joint (American) or lap joint (English) |
|
Material |
AISI 420/440A martensitic stainless steel |
|
Surface finish |
Satin, mirror-polish, or titanium-coated |
|
Weight |
120–180 grams |
|
Autoclave temperature range |
121°C–134°C (250°F–273°F) |
|
Maximum sterilization temp |
177°C (350°F) — do not exceed |
|
Reusable |
Yes (indefinite with proper maintenance) |
|
Warranty (typical) |
Lifetime against manufacturing defects |
What Are Premolar Forceps Used for in Orthodontic Extraction?
Orthodontic treatment plans frequently require extraction of first premolars (teeth #5, #12, #21, and #28 in the universal numbering system) to create space for alignment of crowded or protruding anterior teeth. Premolar forceps used in orthodontic extraction must prioritize atraumatic technique because the alveolar bone and adjacent teeth must remain intact for post-extraction orthodontic tooth movement.
The maxillary first premolar is the most commonly extracted tooth in orthodontic treatment of Class II Division 1 malocclusion. Bilateral extraction of upper first premolars followed by en-masse retraction of the anterior segment using temporary anchorage devices (TADs or mini-implants placed between the second premolar and first molar) is a standard protocol for correcting upper anterior protrusion.
Mandibular first or second premolars are extracted in orthodontic cases requiring lower arch space. The choice between first and second premolar extraction depends on the crowding location, anchorage requirements, and molar relationship. Lower second premolar extraction is preferred when the crowding is posterior; lower first premolar extraction is preferred when the crowding is anterior.
Atraumatic premolar forceps (#150AF, #151AS) and physics forceps reduce the risk of buccal bone plate fracture during orthodontic extraction. Preserving the buccal plate maintains ridge width, which supports predictable orthodontic tooth movement into the extraction space.
How Do Premolar Forceps Differ from Molar and Anterior Forceps?
|
Feature |
Anterior Forceps |
Premolar Forceps |
Molar Forceps |
|
Target teeth |
Incisors, canines |
First and second premolars |
First, second, third molars |
|
Beak shape |
Narrow, symmetrical |
Medium-width, symmetrical, concave |
Wide, asymmetric (split beak or cowhorn) |
|
Root engagement |
Single conical root |
1–2 roots, conical or oval |
2–3 roots, furcation engagement |
|
Rotation allowed |
Yes (conical roots) |
Limited (lower 2nd premolar yes; upper 1st premolar no) |
No (multi-rooted) |
|
Upper example |
#150 (also universal) |
#150, #150A, #99 |
#18L, #18R, #53L, #53R, #88L, #88R |
|
Lower example |
#151 (also universal) |
#151, #151A, #103 |
#15, #17, #16, #23 (cowhorn) |
|
English upper |
No. 1 |
No. 7, No. 35 |
No. 17, No. 18 |
|
English lower |
No. 74N |
No. 13, No. 75, No. 8 |
No. 22, No. 73, No. 86 |
The #150 and #151 are classified as "universal" forceps because their beak geometry extracts anteriors and premolars within the same arch. Dedicated premolar variants (#150A and #151A) narrow the beak width for a tighter anatomical fit on the premolar cervical diameter, which is smaller than the canine but wider than the incisor.
What Is the Correct Forceps Number for Each Premolar Tooth?
|
Tooth (Universal #) |
Tooth Name |
Arch |
Recommended Forceps |
Pattern |
|
#5 |
Upper right first premolar |
Maxillary |
#150, #150A, #99, or English No. 7 |
American or English |
|
#4 |
Upper right second premolar |
Maxillary |
#150, #150A, #99, or English No. 7 |
American or English |
|
#12 |
Upper left first premolar |
Maxillary |
#150, #150A, #99, or English No. 7 |
American or English |
|
#13 |
Upper left second premolar |
Maxillary |
#150, #150A, #99, or English No. 7 |
American or English |
|
#20 |
Lower left second premolar |
Mandibular |
#151, #151A, #103, or English No. 13 |
American or English |
|
#21 |
Lower left first premolar |
Mandibular |
#151, #151A, #103, or English No. 13 |
American or English |
|
#28 |
Lower right first premolar |
Mandibular |
#151, #151A, #103, or English No. 13 |
American or English |
|
#29 |
Lower right second premolar |
Mandibular |
#151, #151A, #103, or English No. 13 |
American or English |
All upper premolar forceps listed above are universal for left and right quadrants. All lower premolar forceps listed above are universal for left and right quadrants. No side-specific (L/R) premolar forceps exist in standard extraction sets — side-specific instruments are reserved for upper molar forceps, where the buccal beak must engage the buccal bifurcation on a specific side.
What Is the Minimum Premolar Forceps Kit for a Dental Practice?
A dental practice performing routine premolar extractions requires a minimum of 2 forceps:
-
#150 Upper Universal Forceps — covers all 4 maxillary premolars (plus upper incisors, canines, and roots)
-
#151 Lower Universal Forceps — covers all 4 mandibular premolars (plus lower incisors, canines, and roots)
An expanded premolar-focused kit adds:
-
#150A Upper Premolar Forceps — tighter beak fit on upper premolars
-
#151A Lower Premolar Forceps — tighter beak fit on lower premolars
-
#150AF Atraumatic Upper Forceps — bone-preserving extractions
-
#151AS Atraumatic Split-Beak Lower Forceps — complex or rotated premolars
Hunza Dental offers the Upper Universal Forceps 150 at $40 and the Lower Universal Forceps 151 at $40, both manufactured from medical-grade stainless steel with precision-ground beaks and ergonomic handles. The Universal Forceps Set (including #150, #151, and #23 cowhorn) is available at $120 for practices building a complete extraction armamentarium.
Frequently Asked Questions About Premolar Forceps
What forceps number is used for upper premolar extraction?
The #150 is the standard American-pattern forceps for upper premolar extraction. The #150A is a premolar-specific narrower variant. English-pattern No. 7 serves the same function. All 3 instruments extract maxillary first and second premolars on both the left and right sides.
What forceps number is used for lower premolar extraction?
The #151 is the standard American-pattern forceps for lower premolar extraction. The #151A provides a premolar-specific beak contour. English-pattern No. 13 is the equivalent. All 3 instruments extract mandibular first and second premolars universally.
What is the difference between #150 and #151 forceps?
The #150 is an upper (maxillary) forceps with a slight S-curve between the handle and beak. The #151 is a lower (mandibular) forceps with a near 90-degree angle between the handle and beak. The #150 extracts upper premolars; the #151 extracts lower premolars. The higher number (#151) operates on the lower arch.
Can you use the same forceps for upper and lower premolars?
No. Upper premolar forceps (#150) and lower premolar forceps (#151) have different beak angles that match the access geometry of their respective arches. Using the wrong forceps misaligns the beak with the tooth's long axis, increases the risk of crown fracture, and prevents apical seating.
How many roots does an upper first premolar have?
The maxillary first premolar typically has 2 roots 1 buccal and 1 palatal that bifurcate at the apical third or half. Approximately 1–5% of upper first premolars have 3 roots (the buccal root splits into mesiobuccal and distobuccal). Single-rooted variants exist but are uncommon.
How many roots does a lower premolar have?
Both mandibular first and second premolars typically have 1 root. The root of the mandibular second premolar is conical, permitting rotational extraction movements. The mandibular first premolar root is slightly flattened mesiodistally.
What extraction movement is used for upper premolars?
Upper premolars are extracted with buccopalatal rocking. The operator applies slow buccal pressure first (the buccal plate is thinner), then palatal pressure, alternating until the socket expands enough for delivery. Rotation is contraindicated on dual-rooted upper first premolars because the thin roots fracture under torsional force.
What extraction movement is used for lower premolars?
Lower premolars are extracted with buccolingual rocking and limited rotation. The mandibular second premolar, with its conical single root, allows primary rotational movement. The mandibular first premolar uses buccolingual rocking with minimal rotation.
What is a physics forceps?
Physics forceps are a first-class lever extraction instrument with a single beak on the palatal/lingual root surface and a bumper pad on the buccal alveolar ridge. The operator applies continuous rotational torque through wrist movement. The sustained pressure releases hyaluronidase from the periodontal ligament, achieving biochemical tooth detachment rather than purely mechanical extraction.
What is the difference between American pattern and English pattern premolar forceps?
American-pattern premolar forceps use a smooth box joint hinge with no visible pin. English-pattern premolar forceps use a lap joint with a visible screw or pin. The English pattern places the fulcrum closer to the beak, providing higher mechanical advantage. American-pattern forceps dominate the US market; English-pattern forceps are standard in the UK and parts of Asia.
Can premolar forceps be used on deciduous (baby) teeth?
Standard adult premolar forceps (#150, #151) are too large for primary teeth. Pediatric variants (#150S, #151S) have smaller, finer beaks designed for deciduous molars and primary tooth roots. Using adult forceps on deciduous teeth risks crushing the thin deciduous crown and damaging the underlying permanent tooth bud.
How do you sterilize premolar forceps?
Autoclave premolar forceps at 121°C (15 psi) for 15–20 minutes after ultrasonic cleaning in a neutral-pH enzymatic solution. Open the hinge before packaging in a sterilization pouch. Apply water-soluble instrument lubricant to the hinge before autoclaving. Do not exceed 177°C, as this damages the steel temper.
What material are premolar forceps made from?
Premolar forceps are manufactured from medical-grade martensitic stainless steel (AISI 420 or 440A), containing 12–14% chromium for corrosion resistance. German-forged stainless steel is the manufacturing standard. Titanium-coated variants add a titanium nitride layer for increased surface hardness and reduced glare.
How long do premolar forceps last?
German-forged stainless steel premolar forceps last indefinitely with proper maintenance cleaning, lubrication, and autoclaving per manufacturer guidelines. Most manufacturers, including Hu-Friedy and Hunza Dental, offer a lifetime warranty against defects in materials and workmanship.
What happens if you use the wrong forceps on a premolar?
Using mismatched forceps causes beak misalignment on the root surface, increases the risk of crown fracture, may crack the buccal bone plate, and can damage adjacent teeth. Using molar forceps (e.g., cowhorn #23) on a premolar is the most dangerous mismatch because the cowhorn beaks attempt to engage a bifurcation that does not exist on single-rooted premolars.
What is the #99 forceps used for?
The #99 is an American-pattern maxillary forceps with a straight handle and beaks contoured to follow facial and lingual root contours. The #99 extracts upper anteriors and premolars and functions universally in both left and right quadrants.
What is the #103 forceps used for?
The #103 is an American-pattern mandibular forceps with straight handles and straight beaks for lower anteriors and premolars. The #103 differs from the #151 by lacking the angled beak, which provides a direct line of traction for certain mandibular premolar positions.
What are atraumatic premolar forceps?
Atraumatic premolar forceps (#150AF, #151AS) have finer, tapered, or split beaks that engage the root surface more apically and distribute extraction force more evenly. Atraumatic designs reduce buccal bone plate fracture, minimize gingival laceration, and preserve alveolar ridge width for implant placement or orthodontic tooth movement.
What forceps are used for orthodontic premolar extraction?
Orthodontic premolar extractions use standard (#150, #151), atraumatic (#150AF, #151AS), or physics forceps. The clinical priority in orthodontic extraction is preserving the alveolar bone, buccal plate, and interdental bone crest to support subsequent tooth movement into the extraction space.
What is the English No. 7 forceps?
English No. 7 is an English-pattern upper premolar forceps with a lap-joint hinge. The No. 7 extracts upper premolars and roots. Its closer fulcrum position provides higher mechanical advantage compared to the American #150.
What is the English No. 13 forceps?
English No. 13 is an English-pattern lower premolar forceps with a lap-joint hinge. The No. 13 extracts mandibular premolars with the fulcrum positioned near the beak for increased leverage.
What is the role of the forceps hinge in premolar extraction?
The hinge is the fulcrum that converts handle motion into beak force. A box joint (American pattern) provides smooth, even force distribution. A lap joint (English pattern) offers a closer fulcrum-to-beak distance, increasing mechanical advantage. The hinge must be maintained with water-soluble lubricant and sterilized with the hinge open to prevent corrosion and stiffness.
How do you prevent root fracture during upper first premolar extraction?
Review the periapical radiograph to identify root count and bifurcation depth. Use a 3 mm luxator to expand the socket before applying forceps. Select the #150 or #150A and seat beaks as far apically as possible. Apply slow buccopalatal rocking no rotation. Avoid excessive buccal force. If the crown fractures, section the tooth into individual roots with a surgical bur rather than attempting forceful delivery.
What is the price range for premolar forceps?
Standard American-pattern premolar forceps (#150, #151) retail between $30 and $90 per instrument, depending on the manufacturer and steel quality. German-forged instruments from manufacturers such as Hu-Friedy and Hunza Dental occupy the $40–$90 range. Atraumatic and physics forceps cost $150–$400 per instrument or set.
Where can I buy premolar forceps in the USA?
Hunza Dental (hunzadental.com) manufactures and sells premolar forceps directly to dental professionals in the United States. The Upper Universal Forceps 150 and Lower Universal Forceps 151 are available individually and as part of the Universal Forceps Set. All Hunza Dental extraction forceps are made from medical-grade stainless steel and ship from New Jersey and Texas.
What is the best premolar forceps for dental students?
Dental students should start with the #150 (upper universal) and #151 (lower universal). These 2 instruments cover all premolar extractions and also serve as the universal forceps for incisors, canines, and retained roots. Mastering the #150 and #151 provides the foundation for learning specialized forceps later.
Can premolar forceps be sharpened or refurbished?
Premolar forceps beaks can be realigned and the serrations restored by an instrument refurbishment service. Hinge replacements and handle refinishing are also possible. Refurbishing extends instrument life and restores factory performance at a fraction of the replacement cost. Hunza Dental offers warranty and repair services for its extraction forceps.
How do premolar forceps fit into a dental instrument tray setup?
In a standard extraction tray setup, premolar forceps are positioned alongside the syringe (for anesthesia), periosteal elevator, luxator or straight elevator, gauze squares, and suction tip. The forceps is the primary extraction instrument; the elevator is the secondary. The tray should include both the #150 and #151 if premolars in both arches may require extraction during the procedure.
Are premolar forceps autoclavable?
All medical-grade stainless steel premolar forceps are autoclavable. Standard autoclave settings for dental forceps are 121°C at 15 psi for 15 minutes or 134°C at 30 psi for 3 minutes. Forceps should be cleaned, lubricated, and packaged in individual sterilization pouches with the hinge open before autoclaving.