Board Exams MCQs on Tooth Extraction (Exodontia) and Impactions

During extraction of a grossly carious maxillary molar under local anesthesia, a fractured tooth fragment accidentally slips posteriorly into the patient’s airway. Shortly afterward, the patient develops coughing and respiratory distress. Chest radiograph confirms aspiration of the fragment into the bronchial tree. Which of the following statements regarding an inhaled tooth fragment is FALSE?

During routine extraction of an upper anterior tooth, the oral surgeon applies a controlled rotational movement after initial luxation to facilitate removal of the tooth from its socket. The trainee is asked which tooth is most suitable for this extraction technique. Rotatory movement is most commonly used for extraction of which tooth?

A patient undergoes radiographic evaluation for an impacted mandibular third molar prior to surgical extraction. On intraoral periapical radiograph (IOPA), the impacted tooth demonstrates a characteristic “bull’s eye” appearance, helping determine its buccolingual position. This radiographic appearance is most commonly associated with:

A 28-year-old pregnant woman in her second trimester develops dizziness and syncope while undergoing extraction of an upper molar under local anesthesia. The oral surgeon suspects supine hypotensive syndrome caused by compression of the inferior vena cava by the gravid uterus. What is the most appropriate position for managing this patient?

A 52-year-old hypertensive patient undergoes extraction of a mandibular molar. Initial hemostasis is achieved successfully, but a few hours later the patient returns with renewed bleeding from the extraction socket after the vasoconstrictive effect of local anesthesia has worn off. Reactionary hemorrhage following tooth extraction most commonly occurs because of:

During routine exodontia clinic, a dental intern experiences difficulty while extracting a maxillary tooth because of its bifurcated roots and tendency for root fracture. The supervising oral surgeon explains that this tooth is considered one of the most difficult teeth to extract in the maxillary arch. Which of the following teeth is generally the most difficult to extract in the maxillary arch?

During extraction of a grossly carious maxillary molar, the operator suddenly loses resistance and suspects displacement of a root fragment into the maxillary sinus. Radiographic examination confirms the presence of the root within the sinus cavity. Displacement of a root into the maxillary sinus is most likely to occur during extraction of which tooth?

During a routine extraction clinic, a dental intern experiences significant resistance while attempting to remove a maxillary tooth with a long, dense root embedded in thick surrounding bone. The supervising surgeon explains that this tooth is considered relatively difficult to extract because of its root anatomy and strong alveolar support. Which of the following teeth is relatively difficult to extract?

A 60-year-old male on long-term dicumarol anticoagulant therapy requires extraction of a mandibular molar. Before performing the procedure, the oral surgeon evaluates the patient’s coagulation status to assess the risk of postoperative bleeding. Which laboratory investigation is most valuable in evaluating the surgical risk in this patient?

A 50-year-old male on long-term corticosteroid therapy is scheduled for routine tooth extraction under local anesthesia. He has been taking hydrocortisone 60 mg daily for a chronic medical condition. The oral surgeon evaluates whether any perioperative steroid dose modification is required. What should be done regarding the patient’s hydrocortisone dose on the day before extraction?

A 50-year-old male on long-term corticosteroid therapy is scheduled for routine dental extraction under local anesthesia. He has been taking hydrocortisone 60 mg daily for a chronic systemic condition. The oral surgeon evaluates whether any alteration in steroid dosage is necessary before the procedure. What should be done regarding the patient’s hydrocortisone dose on the day before extraction?

During surgical removal of an impacted mandibular third molar, an operator uses an air-rotor handpiece operating at 300,000 rpm for bone removal. Shortly after the procedure, the patient develops rapid swelling with crepitus in the facial tissues due to air being forced into the soft tissue spaces. What is the most likely complication associated with use of an air-rotor at high speed during impacted molar surgery?

Before performing a tooth extraction, the oral surgeon takes a detailed medical history from the patient. During questioning, the patient reports prolonged bleeding after previous minor injuries and a family history of abnormal bleeding tendencies. What is the most important use of medical history in extraction patients?

A patient with chronic liver disease presents for extraction of a grossly carious mandibular molar. During preoperative assessment, the oral surgeon is particularly concerned about complications related to impaired hepatic function and reduced synthesis of clotting factors. What is the most likely complication during extraction in a patient with liver disease?

A 32-year-old patient returns 3 days after extraction of a mandibular third molar with severe throbbing pain, foul odor, and an empty-looking extraction socket. Clinical examination reveals exposed bone with absence of the normal blood clot. Which of the following statements regarding dry socket is TRUE?

A patient presents with persistent trismus 4 weeks after extraction of a mandibular molar performed under inferior alveolar nerve block anesthesia. Clinical examination shows restricted mouth opening without signs of acute infection. Radiographic evaluation is advised to identify a possible foreign body in the pterygomandibular region. What is the most likely cause of trismus in this patient?

A patient undergoes extraction of an impacted mandibular third molar with satisfactory immediate hemostasis. Several hours later, the patient develops renewed bleeding from the surgical site after the vasoconstrictor effect of local anesthesia subsides. Reactionary hemorrhage after surgery typically occurs:

During surgical removal of a fractured root tip, the oral surgeon selects a small elevator that can be comfortably held and rotated between the thumb and fingers for delicate controlled movements in a confined area. Which of the following elevators best fits this description?

A patient presents for extraction of a mandibular molar associated with a radiolucent vascular lesion within the jaw. Clinical and radiographic findings suggest a central hemangioma involving the mandible. The oral surgeon decides not to proceed with extraction because of the risk of catastrophic bleeding. Which of the following is an absolute contraindication for tooth extraction?

A 58-year-old male presents for elective extraction of multiple teeth. His medical history reveals that he suffered a myocardial infarction (MI) two months ago and is currently under cardiology follow-up. The oral surgeon considers the safest management approach for this patient. What is the best management for elective dental extractions in this patient?

During surgical removal of a fractured root apex, the oral surgeon selects an apex elevator to carefully luxate the root fragment from the socket without excessive bone removal. The instrument functions by forcing itself between the root and surrounding bone to displace the fragment. Which mechanical principle is primarily utilized by an apex elevator?

During extraction of a mandibular third molar, the oral surgeon notices that the distal root has disappeared from the socket during elevation. Clinical suspicion arises that the root tip has been displaced through the lingual cortical plate into an adjacent fascial space. The missing root tip is most likely displaced into which space?

A patient undergoes complete mouth extraction under local anesthesia. The following day, bluish-black discolorations are noticed over the neck region without significant pain or fever. The oral surgeon reassures the patient that this is a common postoperative finding caused by subcutaneous bleeding. These blue-black spots most likely indicate:

Following surgical extraction of an impacted mandibular third molar, the oral surgeon advises the patient regarding postoperative pain control. The goal is to maintain adequate analgesia before severe pain develops after the local anesthetic effect subsides. What is the best time to administer analgesics after tooth extraction?

A patient presents with severe pain and swelling associated with an acutely infected mandibular molar indicated for extraction. The oral surgeon decides to proceed with extraction after initiating appropriate antibiotic therapy and ensuring adequate systemic coverage. What is the effect of extracting a tooth during acute infection?

During a difficult extraction of a grossly decayed mandibular molar, the oral surgeon decides to section the tooth into pieces rather than applying excessive force. The aim is to preserve surrounding tissues and promote optimal healing. What is the most important principle during tooth extraction?

During extraction of a maxillary premolar, the oral surgeon properly seats the extraction forceps around the cervical portion of the tooth before beginning luxation movements. The surgeon emphasizes that the initial direction of force is critical for effective socket expansion and controlled tooth removal. When using forceps for tooth extraction, the first direction of force application should be:

A patient returns 3 days after extraction of a mandibular third molar complaining of severe throbbing pain radiating to the ear. Examination reveals an empty socket with exposed bone and foul odor, consistent with alveolar osteitis (dry socket). What is the ideal treatment for this condition?

During extraction of multiple periodontally compromised teeth in the same quadrant, the oral surgeon uses a dental elevator extensively to luxate the teeth before forceps application. The surgeon explains that elevators are particularly advantageous when damage to adjacent teeth is not a concern. The elevator can be used to greatest advantage when:

During extraction of a maxillary molar, the operator notices fracture of the maxillary tuberosity. The fractured segment, however, remains attached to the mucoperiosteum and maintains an intact blood supply. What is the most appropriate management in this situation?

During extraction of a grossly decayed mandibular first molar, the oral surgeon selects a No. 16 cowhorn forceps to engage the furcation area and facilitate atraumatic removal of the tooth. No. 16 cowhorn forceps are specially designed for extraction of:

A patient returns 3 days after extraction of a mandibular third molar complaining of severe throbbing pain radiating to the ear, foul taste, and bad breath. The oral surgeon suspects alveolar osteitis (dry socket) based mainly on the patient’s symptoms and postoperative course. Diagnosis of dry socket is primarily made by:

A patient reports severe throbbing pain radiating to the ear three days after extraction of a mandibular third molar. Examination reveals an empty socket with exposed bone and foul odor, consistent with dry socket (alveolar osteitis). Pain associated with dry socket is most commonly experienced on:

A patient presents several days after tooth extraction with renewed bleeding from the extraction socket associated with foul odor and signs of local infection. The oral surgeon explains that the bleeding is due to wound sepsis causing breakdown of the healing tissues and clot. Bleeding occurring a few days after extraction due to wound infection is termed:

A patient receiving long-term anticoagulant therapy requires an unavoidable dental extraction. The oral surgeon evaluates the bleeding risk and plans management carefully to avoid both hemorrhagic and thromboembolic complications. What is the most appropriate approach in managing such a patient?

A patient develops vasovagal syncope during administration of local anesthesia for tooth extraction. The operator places the patient in a supine position and uses aromatic ammonia to help revive the patient. The principal action of ammonia in syncope is as a:

A patient returns 3 days after surgical removal of an impacted mandibular third molar complaining of severe throbbing pain radiating to the ear and foul taste in the mouth. Clinical examination reveals an empty extraction socket with exposed bone. What is the most common complication following removal of a mandibular third molar?

A pregnant woman requires extraction of a severely carious tooth causing persistent pain and infection. The oral surgeon plans treatment during the safest period of pregnancy to minimize risk to both the mother and fetus. What is the best time for dental extraction during pregnancy?

A patient with a known bleeding disorder requires removal of a mobile tooth. To minimize surgical trauma and reduce the risk of hemorrhage, the oral surgeon considers using a gradual non-traumatic extraction technique employing elastic pressure around the tooth. “Rubber band extraction” is a method mainly used in patients with:

A diabetic patient taking insulin presents for tooth extraction early in the morning. He took his usual insulin dose but skipped breakfast before the appointment. During the procedure, he develops sweating, tremors, confusion, and dizziness. Hypoglycemia in such a patient most likely occurs when:

A 15-year-old patient undergoing orthodontic evaluation is found to have an impacted maxillary canine on radiographic examination. CBCT imaging reveals close proximity of the impacted tooth to the roots of adjacent incisors with evidence of external root resorption. Which of the following statements regarding impacted canines is TRUE?

During preoperative assessment of an impacted mandibular third molar, the oral surgeon carefully evaluates the relationship between the tooth roots and the inferior alveolar canal on panoramic radiograph. A radiolucent band crossing the root with grooving and tunneling appearance is observed, suggesting close proximity to the nerve canal. Which radiographic finding indicates this relationship?

During surgical removal of a deeply impacted distoangular mandibular third molar, excessive force is applied while elevating the tooth. Suddenly, a crack is heard and the patient experiences severe pain, raising suspicion of a mandibular fracture. Extraction of a distoangular impacted mandibular third molar can most commonly result in:

During radiographic evaluation of an impacted mandibular third molar, the oral surgeon uses Winter’s WAR lines to estimate the difficulty of extraction. One of these lines specifically indicates the depth of the impacted tooth within the bone. In Winter’s classification, the “red line” represents:

During surgical removal of an impacted mandibular third molar, the oral surgeon performs controlled buccal bone removal to create adequate access for elevation and sectioning of the tooth while preserving surrounding structures. During extraction of a lower impacted molar, bone is ideally removed:

A patient presents with recurrent pain, swelling, and difficulty in mouth opening associated with a partially erupted impacted mandibular third molar. Clinical examination reveals inflamed operculum and food debris accumulation consistent with pericoronitis. What is the best definitive treatment for this condition?

Before surgical removal of an impacted mandibular third molar, the oral surgeon evaluates appropriate radiographic investigations to assess the tooth position, surrounding bone, and relation to vital structures. Which of the following statements regarding radiographs for impacted tooth removal is correct?

During preoperative assessment of an impacted mandibular third molar, the oral surgeon explains to the trainee that certain angulations are associated with significantly greater surgical difficulty because of limited access, dense overlying bone, and relation to the mandibular ramus. Which of the following third molar impactions is considered the most difficult to remove?

A 23-year-old female presents with pain and progressively reduced mouth opening for the past 4 days. Clinical examination reveals inflammation around a partially erupted mandibular third molar with tenderness in the retromolar region. What is the most likely cause of the decreased mouth opening?

During surgical removal of impacted bone around a mandibular third molar, the oral surgeon uses a chisel and mallet for controlled bone cutting. Proper orientation of the chisel bevel is essential to preserve healthy bone while removing the desired portion. During bone cutting, the bevel of the chisel should be directed:

While evaluating an impacted mandibular third molar radiographically, the oral surgeon uses Winter’s WAR lines to estimate the difficulty of extraction. One of these lines specifically indicates the level of bone covering the impacted tooth. In Winter’s WAR line assessment, the Amber line represents:

A patient complains of numbness over the lower lip and chin region following surgical removal of an impacted mandibular third molar. The oral surgeon suspects injury to a sensory nerve during the procedure. Postoperative anesthesia over the chin after third molar surgery is most likely due to damage to which nerve?

A patient with a history of congenital cardiac abnormality is scheduled for tooth extraction. The oral surgeon considers the risk of infective endocarditis and plans prophylactic antibiotic coverage before the procedure. Antibiotic prophylaxis before extraction is mandatory in patients with:

Following multiple tooth extractions in the mandibular arch, the oral surgeon places sutures to approximate the soft tissues, stabilize the clot, and promote healing of the extraction sites. After multiple tooth extraction, sutures are ideally placed at the:

During surgical extraction of an impacted mandibular third molar, the oral surgeon raises a mucoperiosteal flap to gain adequate access for controlled bone removal and tooth sectioning. Which of the following statements regarding mucoperiosteal flaps is TRUE?

A young adult patient presents with repeated episodes of pain, swelling, foul taste, and difficulty in mouth opening associated with a partially erupted mandibular third molar. The oral surgeon recommends extraction because the condition continues to recur despite conservative management. What is the most common reason for removal of impacted mandibular third molars?

A patient with leukemia undergoes tooth extraction and subsequently develops prolonged postoperative bleeding from the extraction socket. Laboratory investigations reveal severe thrombocytopenia. Post-extraction bleeding in a leukemic patient is most commonly due to:

During preoperative evaluation of an impacted mandibular third molar, the oral surgeon uses the WHARFE assessment system to estimate surgical difficulty and plan extraction strategy. In WHARFE assessment of impacted third molars, the letter “A” stands for:

A panoramic radiograph shows a mesioangular impacted mandibular third molar classified as Class II, Level II according to the Pell and Gregory classification. The oral surgeon calculates the extraction difficulty score to estimate the complexity of surgery. What is the difficulty score for this impacted tooth?

A 55-year-old male with a history of myocardial infarction has been taking Aspirin 75 mg daily for the past 6 months. He now requires extraction of a grossly carious tooth. The dentist evaluates whether the antiplatelet therapy should be altered before the procedure. What is the most appropriate management?

A patient reports severe pain on the 3rd postoperative day following extraction of a mandibular third molar. Clinical examination shows a tender extraction socket with loss of clot, but there is no fever or facial swelling. The oral surgeon diagnoses alveolar osteitis (dry socket). What is the most appropriate treatment?

During extraction of a fractured mandibular molar root, the oral surgeon uses a dental elevator to luxate the root fragment by applying force against the surrounding bone acting as a fulcrum. Elevators used in exodontia mainly work on which mechanical principle?

A young female patient develops severe pain and an empty extraction socket three days after removal of a mandibular third molar. On reviewing her medical history, the oral surgeon identifies a medication known to increase the risk of dry socket formation. Intake of which of the following is associated with an increased incidence of dry socket?

During extraction of an impacted maxillary third molar, the oral surgeon notices sudden mobility of the posterior maxillary bone along with the tooth, suggesting involvement of the maxillary tuberosity. What is the most commonly encountered complication during extraction of a maxillary third molar?

During extraction of a maxillary molar, the palatal root fractures and remains deep within the socket. The oral surgeon avoids using an elevator aggressively because of the risk of displacing the root into adjacent anatomical spaces. Elevators should NOT be used to remove the palatal root of which tooth?

During surgical bone removal in oral surgery, the surgeon selects an osteotome instead of a chisel for controlled cutting and splitting of bone. The trainee is asked about the distinguishing feature between these two instruments. Osteotomes differ from chisels in that they are:

During surgical extraction of a grossly broken mandibular molar, the oral surgeon selects Winter’s elevators No. 14R and 14L to remove deeply seated root fragments from the socket. The long Winter elevators (Nos. 14R and 14L) are specially designed for removal of:

During full mouth extraction, the oral surgeon follows the standard sequence of tooth removal to improve access, visibility, and control during the procedure. In routine extraction procedures, the most posterior teeth are usually removed:

Before surgical extraction of an impacted mandibular third molar, the oral surgeon carefully evaluates radiographic signs to determine the risk of injury to the inferior alveolar nerve. The assessment method described by Howe and Poyton (1960) is used for this purpose. Howe and Poyton developed criteria to diagnose the:

During surgical extraction of an impacted mandibular third molar, the oral surgeon carefully retracts the lingual flap to protect the lingual nerve and improve visibility of the surgical field. Which instrument is commonly used to retract the lingual flap in mandibular third molar surgery?

During removal of an impacted mandibular third molar using the lingual split technique, the surgeon employs a hand instrument to section and split the tooth after controlled bone removal. Which instrument is traditionally used to cut the tooth in the lingual split technique?

During extraction of a maxillary molar, a root fragment is accidentally displaced into the maxillary sinus (antrum). The oral surgeon requests an appropriate radiograph to accurately determine the position of the displaced root before retrieval. Which is the ideal radiograph in this situation?

During a difficult tooth extraction, a patient suddenly develops cardiac dysrhythmia associated with intense pain and trigeminal stimulation. The oral surgeon recognizes this as a reflex response related to cranial nerve involvement during the procedure. Cardiac dysrhythmia during extraction is most commonly caused by stimulation of which nerve?

A patient who lost multiple posterior teeth several years ago presents for prosthetic rehabilitation. Clinical and radiographic examination reveals narrowing of the alveolar ridge, reduced vertical bone height, and decreased trabecular density in the edentulous areas. Which of the following changes are expected after tooth loss?

A patient presents with a mandibular fracture involving the tooth-bearing area. During evaluation, the oral surgeon assesses whether teeth present in the fracture line should be retained or extracted according to the criteria described by Killey and Kay. Which of the following is NOT an absolute indication for removal of a tooth from the fracture line?

A patient receiving long-term corticosteroid therapy for a chronic systemic disease requires multiple tooth extractions. The oral surgeon considers the risk of adrenal suppression and plans appropriate perioperative management. What precaution should be taken before extraction in a patient on long-term steroid therapy?