1) The most widely used irrigant displaying optimal cleansing bactericidal properties is:

2) Which of the following tests is mainly use to detect cracks?

3) Which thicknesses of rubber dam are preferably used in most situations?

4) Lentulo spiral used by:

5) Which tooth has tuberculum Carabelli :

6) What will happen if we do not completely remove all the contents of pulp chamber?

7) The final restoration of an anterior tooth with a large decay but with more than 1/2 of tooth structure remained plus ferrule effect, and with deep over bite and increased functional stresses should be:

8) For the extripation of entire pulp, necrotic debris, and foreign material, one should use

9) Extra canals during root canal treatment:

10) Which statement is true about the working time of NaOCl?

11) Which of the following is defined as a treatment, which aims to preserve and maintain the pulp tissue that has been compromised but not destroyed, by caries, trauma or restorative procedures, in a healthy state?

12) Which of the following types of traumatic injuries will not usually result in infectious inflammation of the pulp?

13) Multiple accessory foramina:

14) Anesthetic testing is most effective in localizing pain:

15) Moat important aspect of irrigation is:

16) An ideal root canal:

17) When chlorhexidine is mixed with NaOCl, what will occur?

18) An 8 years old boy presents with class III fracture of tooth 11, with appeared an hour ago, the apex is not closed. Your Treatment should be:

19) If an instrument is broken in the middle third of a canal at the very beginning of the root canal preparation of a tooth with a periapical lesion, and the separated instrumented can neither be retrieved nor bypassed, how would the prognosis be like?

20) Pulp stones are most often seen in:

21) The order of treatment recommended for emergency treatment is:

22) When pulpal anesthesia fails, what should we do as our first attempt to succeed in numbing the pulp?

23) Which is not one of the chemicals used to control the bleeding during endodontic surgery?

24) Which instrument should be used to remove the coronal portion of GP in an attempt to retreat a failure case?

25) Which of the following statements is correct?

26) What shape is the access cavity for upper and lower premolars?

27) What is the chief complaint?

28) Ayoung 12 years old boy presents with reddish overgrowth of tissue, protending from carious exposure in lower molar. What may be the possible diagnosis?

29) Which one of the following conditions can make an electric pulp tester get a false-positive result?

30) At present, which material should be used for root canal disinfection?

31) What is the restoration of choice for a large class II MO/OD cavity in a posterior root-treated tooth with limited functional and lateral stresses?

32) Which is not one of the iatrogenic causes of apical periodontitis?

33) The most reliable test to diagnosis the condition of the pulp is:

34) Bacteria responsible for extraradicular infection are mainly:

35) Which statement is true about post placement?

36) Which of the following is not one of the protective mechanisms of the pulp tissue to non-destructive stimuli?

37) បុរសម្នាក់អាយុ២០ឆ្នាំ បានត្អួញត្អែរថាឈឺធ្មេញខាងឆ្វេងលើ with thermal stimuli ។ អ្នកជំងឺ បាននិយាយ ថា ធ្លាប់បានព្យាបាលធ្មេញ #24។ The cause of the pain could be:

38) Using a conservative approach, what is the restoration of choice for a small class II MOD cavity in a posterior root-treated tooth with limited functional and lateral stresses?

39) You started RCT on tooth #46 two days ago which was asymptomatic. Patient was given another appointment to finish the RCT. The patient came back to your clinic complaining of severe pain when chewing on the same tooth. Clinical examination revealed pain on percussion only. Radiograph shows normal apical area. The cause of the pain might be:

40) What is the benefit of applying a cold compress to the surgical site on the day of the surgery?

41) Using a conservative approach, what is the restoration of choice for a small class II MO/OD cavity in a posterior root-treated tooth with limited functional and lateral stresses?

42) How long should we apply formocresol to fix pulp tissue in pulpotomy of primary teeth?

43) Using a protective approach, what is the restoration of choice for a large class I cavity in a posterior root-treated tooth with limited functional and lateral stresses?

44) The patient has no spontaneous pain and responds normally to pulp testing and percussion. However, radiographically, there are some pulpal calcifications but no evidence of resorption, caries, or mechanical pulp exposure. The pulpal diagnosis of this case is:

45) When should spreader or plugger be selected?

46) When treating vital cases multi-visits, scheduling between visit should…:

47) Factors to consider whether to retreat or not include all of the following except one, which is:

48) Cementum cannot be resorbed by:

49) The pulpectomy have :

50) Endodontic radiograph in treatment is:

51) To avoid improper use which would result in broken instruments:

52) Dental history taking:

53) Which of the following is not a main reason for using rubber dam during root canal treatment?

54) According to “apical box preparation” technique, the apical enlargement of the distal root of a lower molar with one canal should be:

55) A clockwise/counter-clockwise rotation of the instrument through an arc of 30-90o while advancing the instrument into the canal is:

56) For patients with severe endodontic infections but not life-threatening and given that they are not allergic to penicillin, which antibiotic should be used?

57) Which of the following tests is used to detect pulp vitality?

58) Why do we need a ferrule in restoring teeth with small amount of tooth structure remained?

59) Among the following products, which one is the gold standard as an electronic apex locator?

60) The pulpectomy immediate are:

61) When EDTA is mixed with NaOCl, what will happen?

62) If an instrument is broken at the apex after the completion of root canal preparation of a vital case, how would the prognosis be like?

63) When can we directly restore the endo-treated teeth?

64) Which of the followings is not one of the treatment principles of root canal therapy?

65) A child has sustained a traumatic exposure of primary central incisor, he presents to you for treatment two days after the injury. Which of the following should be considered?:

66) SmearClear is a combination product of:

67) What is the objective of access cavity?

68) Which one is a drawback of wide apical preparation?

69) Third degree tetracycline staining is:

70) Which one is a drawback of narrow apical preparation?

71) Which irrigant has tissue-dissolving ability?

72) Canal orifices are identified with:

73) In which case can the treated-tooth be left open?

74) Perforations in the crown and root.

75) A common name of chronic apical periodontitis is:

76) According to “apical box preparation” technique, the apical enlargement of the disto-buccal root of an upper molar should be:

77) The majority of the pulp nerves are:

78) Which of the following is true regarding maxillary canines:

79) When the patient is symptomatic and the root canal is wet

80) Give me one way of how to prevent NaOCl accidents?

81) What is the main risk associated with internal bleaching?

82) Upper second premolars usually have

83) Which material has fluoride–releasing property?

84) What is the dosage of azithromycin?

85) Which syringe is recommended for irrigation?

86) The most important principle access cavity for root canal treatment is:

87) Which dressing material is placed permanently over the pulp stump in pulpotomy of primary teeth?

88) The pulpectomy devitalizing are:

89) What instrument is NOT ever needed for access preparation?

90) Where is an extra canal often found in upper molars?:

91) Which solution can be used as an alternative to EDTA?

92) From the list below, which is an unlikely characteristic of reversible pulpitis?

93) បរុសម្នាក់មកគ្លីនិករបស់ខ្ញុំហើយត្អួញត្អែរថាគាត់ ឈឺចាប់បន្តិចបន្តួចលើកលែងតែ ពេលទំពាចំណីអាហារចូលក្នូង Cavity។អ្នកជំងឺនេះមានរោគវិនិច្ឆ័យ:

94) Regardless of the swelling and if the time and condition permit, the emergency treatment of pulp necrosis case should be:

95) What shape is the access cavity for upper and lower molars?

96) If an instrument is broken at the apex of a canal after the root canal preparation is completed of a tooth with a periapical lesion, and the separated instrumented can neither be retrieved nor bypassed, how would the prognosis be like?

97) Disparities between the radiographic apex and the apical foramen, and also a funnel-shaped opening to the foramen are due to:

98) The Management of broken instruments by surgical approach includes all of the following methods except one:

99) In the peripheral dentin, the number of dentinal tubules is about:

100) Which is the most demanding flap in term of the operator’s skill?

101) What is the main advantage of stepwise excavation?

102) When should NaOCl accidents be suspected?

103) Which statement is not true about apical pocket cysts?

104) According to “apical box preparation” technique, the apical enlargement of lower premolars with two canals should be:

105) According to “apical box preparation” technique, the apical enlargement of lower canine should be:

106) K files used by

107) Leaving the tooth open between appointment during root canal therapy could lead to:

108) The infection of root canal system is related to:

109) Dental pulp is devided in :

110) Which condition shouldn’t an electronic apex locator be used?

111) Which method is not practical to evaluate the outcome of endodontic treatment?

112) The plexus of Raschkow is located:

113) Which of the following statements is true?

114) If at 6 months, the lesion is still present but smaller in size, the lesion:

115) A good root filling of endodontic is :

116) Which color of rubber dam should be used if possible?

117) The objective of pulpotomy is to:

118) Which one of the following conditions can make an electric pulp tester get a false-positive result?

119) Which of the following statements is not true?

120) The first step in removing the cast post and core should be:

121) For the extirpation of entire pulp, necrotic debris, and foreing material, one should use:

122) What type of dentine has to be removed during the indirect pulp capping procedure?

123) Which of the following statement is true?

124) Most cases of pulpitis are caused by:

125) Which is the main component of the dentin?

126) In case of retreatment, when should a crown be kept?

127) A mechanical pulp exposure of small diameter ( Less than 1 mmin diameter ) in mandibular first molar is treat by:

128) How does the pulp tissue initially react to irritants?

129) Among all types of electronic apex locator, which type is the less reliable and accuracy?

130) The final restoration of an anterior tooth with a large decay but with more than 1/2 of tooth structure remained plus ferrule effect, and with limited overbite and functional stresses should be:

131) When chlorhexidine is mixed with EDTA, what will occur?

132) The procedure in which only a small portion of coronal pulp (1-3 mm) is removed is called:

133) In RCT, over preparationof the outer wall of the optical curvature of the canal with inflexible instrument will cause:

134) The most extensive branching of the blood vessels occurs in which part of the pulp tissue?

135) After an endodontic emergency treatment, the pain is:

136) The suggested follow-up periods for endodontic treatment range from:

137) Inflammation of pulp, due to deep caries and cavity preparation , may be resolved by:

138) A major determinant for the desired final apical diameter preparation is:

139) ការព្យាបាល Acute Pulpitis is:

140) Why do we need to conserve tooth structure when preparing access cavity?

141) For submarginal incision, the incision should be made at the level of:

142) For rubber dam, which thickness seals best?

143) Which product contains a chlorhexidine-analog?

144) Which may not be one of the risk factors of endodontic flare-ups?

145) Single appointment endodontic therapy is contraindicated in:

146) if you choose to temporarily seal the access cavity of tooth with caviton, how thick should it be?:

147) Endodontic treatment is contraindicated when:

148) What may not be one of the ways to manage the bleeding during endodontic surgery?

149) Which of the following flap does not involve gingival margin, thus no risk of gingival recession?

150) Which condition is best managed by a specialist?

151) In RCT, over preparation of the outer wall of the optical curvature of the canal with inflexible instrument will cause

152) Step-back technique starts from:?

153) The innervation of the pulp tissue consists of:

154) The pulpectomy immediate are:

155) How many frame types are commonly used for rubber dam placement?

156) Among these configurations of apical constriction, which is the most common one?

157) How to improve the tissue-dissolving capacity of NaOCl?

158) បរុសម្នាក់មកគ្លីនិករបស់ខ្ញុំទាំងព្រឹកព្រលឹម ហើយត្អួញត្អែរថាគាត់ឈឺធ្មេញថ្គាមក្រោម លេខ#36 ឈឺចាប់ ជាមួយ ទឹកក្តៅ។អ្នកជំងឺនេះមានរោគវិនិច្ឆ័យ:

159) X rays are used in endodontic treatment to:

160) Decreased size of pulp chamber and root canals of aged teeth is due to:

161) An adequate restoration after an endodontic treatment should have all of the following properties except one which is:

162) The pulpectomy is the surgical removal of:

163) Which statement is not true about the curettage of soft tissue lesion?

164) Healing of apical periodontitis may occur as scar tissue. This is particularly true in:

165) Which of the following stimuli can be considered as non-destructive?

166) In case of retreatment, when should a crown be removed?

167) Anachoresis is:

168) Cavity test:

169) Which is the amount of anesthetic solution injected in intraosseous injection?

170) The most comment cause of Acute pulpitis is:

171) Irreversible pulpitis can be diagnosed by:

172) Which of the following tests is usually used in cases where the patient cannot locate the source of pain properly?

173) Which statement is not true about EDTA?

174) A patient presents with a periapical abscess and a draining sinus on tooth 12, how would you manage the sinus?

175) What is the dosage of amoxicillin?

176) Gates glidden bur used by

177) The final restoration of an anterior tooth with largely intact crown or moderately class 3 or 4, and without discoloration or with discoloration responding well to bleaching should be:

178) How long should we apply ferric sulfate in pulpotomy of primary teeth?

179) The highest incidence of the pulp necrosis is associated with:

180) What is the main reason of discoloration of root treated teeth?

181) Biologically active sealer whoch promote peri-apical healing contain:

182) The push-pull motion is another name of:

183) A pentency file or intial file:

184) Pain on percussion before endodontic treatment indicates:

185) Which of the following is a desirable property of an ideal sealer?

186) Barbed broaches used for

187) Liquefaction necrosis is caused by:

188) According to “apical box preparation” technique, the apical enlargement of lower premolars with one canal should be:

189) Percussion testing:

190) The incident of periapical cyst is well below:

191) Among the following dressing materials for pulpotomy in primary teeth, which seems to be the material of choice at present?

192) The patient complains of pain upon drinking cold drinks, but the pain disappears immediately after the stimulation is over. The tooth response normally to pulp and periapical tests. Radiographically, there is no periapical change but caries can be seen approaching the pulp chamber. What is the likely pulpal diagnosis of this case?

193) Rarefaction in the lower premolar area is most likely:

194) Which of the following is not a diagnostic tool commonly used in endodontics?

195) What is the dosage of clarithromycin?

196) Which motion is best used to prepare severely curved canals?

197) Which is a more important factor as a cause of tooth fracture after endodontic treatment without a protective restoration?

198) A patient presents wet a draining sinus tract in labial vestibule of a maxillary Central incisor.

199) What shape is the access cavity for upper and lower incisors?:

200) Exposed dentin is not caused by:

201) The patient has no any symptoms and response normally to both pulp and periapical test. However, the radiograph shows the caries extend well into the pulp. So, what is the likely pulpal diagnosis of this case?

202) Using a conservative approach, what is the restoration of choice for a small class I cavity in a posterior root-treated tooth with limited functional and lateral stresses?

203) The main role of mechanical instrumentation is to:?

204) When endodontically treating the maxillary first molar, which of the following is correct:

205) In case of vital tooth, how should we determine the success of our treatment?

206) Extra canals are:

207) ការព្យាបាល Chronic ulcerative Pulpitis is:

208) The Hedstrom file:

209) Which is the antibiotic of choice for endodontic infection?

210) Which may not be a differential diagnosis of apical periodontitis as seen radiograpically?

211) Why shouldn’t a tooth with necrotic pulp and some swelling be left open between appointments?

212) Which one is not another name of tertiary dentin?

213) Effeciency of irrigation is affected by:

214) Endodontic failures related to obturation can be caused by:?

215) According to “apical box preparation” technique, the apical enlargement of lower incisors with 2 canals should be: