Biomedical Science(6)

251. Anatomical crown of tooth is?

 Portion of tooth wich is covered by enamel

 Portion of tooth wich is visible in mouth

 Portion crown of tooth wich is visible in mouth

 Portion of tooth may or may not correspond to anatomical croun

252. Clinical crown of tooth is ?

 Portion crown of tooth wich is visible in mouth

 Portion of tooth may or may not correspond to clinical croun

 Portion of tooth wich is visible in mouth

 Portion of tooth wich is covered by enamel

253. នៅពេលធ្វើ Cervical cross sectionនៅលើ Maxillary central incisor, Pulp cavity មានរាង៖

 ពងក្រពើ

 មូល

 មូលទ្រវែង

 ត្រីកោណ

254. The union of the triangular ridge of the distobuccal cusp and the distal ridge of the mesiolingual cusp of maxillary molar forms the:

 Marginal ridge

 Oblique ridge

 Triangular ridge

 Transverse ridge

255. The identifying number of permanent mandibular left second molar in the FDI numbering is:

 2

 17

 18

 37

257. Lingual fossa of maxillary centralស្ថិតនៅ៖:

 ចន្លោះMarginal ridges

 ក្រោម Cingulum

 លើCingulum

 ចន្លោះMarginal ridgesនិងក្រោមCingulum

នៅពេលធ្វើ Cervical cross sectionនៅលើ Maxillary central incisor, Pulp cavity មានរាង:

 ពងក្រពើ

 មូល

 មូលទ្រវែង

 ត្រីកោណ

259. The identifying number of permanent maxillary right second premolar in the FDI numbering is:

260. The identifying number of permanent mandibular left canine in the universal numbering system is:

261. Line angle ត្រូវបានបង្កើតឡើងដោយៈ

Surfaces ពីរប្រសព្វគ្នា

Surfaces បីប្រសព្វគ្នា

Surface មួយប្រសព្វគ្នានឹងPoint angle មួយ

Point angle មួយ ប្រសព្វគ្នា Surfaces ពីរ

262. Permanent maxillary incisors ជាទូទៅ:

 មានស៊េរីចុះពីធំទៅតូចគឺទី១ធំជាងទី២

 មានស៊េរីឡើងពីធំទៅតូចគឺទី១ធំជាងទី២

 មានស៊េរីចុះពីតូចទៅធំគឺទី១តូចជាងទី២

 មានស៊េរីឡើងពីតូចទៅធំគឺទី១ធំជាងទី២

263. លក្ខណៈបួនដែល Crowns of permanent incisors មានលក្ខណៈខុសប្លែកពី Crowns របស់Permanent teeth ដ៏ទៃទៀតរួមមាន:

Incisal edge, Mamelons,ទីតាំងនិងមុំនៃ Marginal ridges, Lingual fossa និង Cingulum

ទីតាំងនិងមុំនៃ Marginal ridges, Incisal edge, Mamelons, Lingual fossa

Mamelons, Lobes, Lingual fossa, Lingual fossa និង Cingulum

Lingual fossa , Cingulum, Incisal edge, Mamelons

266. Root completion របស់ Permanent maxillary central incisor គឺៈ

4-5 years

10-11 years

2-3 months

3-4 months

267. The permanent mandibular second premolar មានៈ

 2 Cusp

 3 Cusp

 1 or 2 Cusp

 2 or 3 Cusp

268. From the occlusal aspect of the permanent mandibular second premolar នៅពេលមានទម្រង់ជាY type cuse ដែលមានបីCusps គឺ:

Buccal cusp > Mesiolingual cusp > Distolingual cusp

Buccal cusp > Distolingual cusp > Mesiolingual cusp

Mesiolingual cusp > Buccal cusp > Distolingual cusp

Distolingual cusp > Mesiolingual cusp > Buccal cusp

269. The most common cusp form of mandibular second premolar is:

 Y type

 U type

 H type

 U or H type

270. Eruption របស់ Permanent maxillary first molar គឺៈ

 At birth

 6-7 years

 5 - 6 Years

 6 years

271. Root completion របស់ Permanent maxillary first molar គឺៈ

 6 Years

 5-6 years

 10 - 11 Years

 9- 10 years

272. បើមើលតាម Buccal surface នៃ Permanent maxillary first molar Crown របស់វាមានរាង

 Parallelogram with small uneven side occlusally

 Trapezoidal with the small uneven side present cervically

 Rectangular with small uneven side occlusally

 Trapezoidal with small uneven side cervically

273. Anatomical landmarks នៅលើ Occlual surface crown of Permanent maxillary first molar គេសង្កេតឃើញ:

 Elevations, Cusps, Marginal ridge, Tubercle, Oblique ridge

 Depression, Developmental grooves, Supplemental groove, Fossa

 Cusps, Marginal ridge, Tubercle, Groove

 Elevations and depression

274. 3 point from Goal of complete dentistry :

 Stable TMJs, Stable occlusion, and Comfort of function

 Stable TMJs, No pain, and Comfort of function

 Stable TMJs, Stable occlusion, and occlusion class II

 Stable occlusion, No pain and Stable TMJs

275. The 5 main mastication muscles are:

 Masseter, Mylohyoid, Medial Pterygoid, Lateral Pterygoid, and Digastric

 Masseter, temporalis, Medial Pterygoid, Lateral Pterygoid, and Stylohyoid

 Masseter, temporalis, Medial Pterygoid, Lateral Pterygoid, and Digastric

 Masseter, Mylohyoid, Medial Pterygoid, Lateral Pterygoid, and Stylohyoid

276. The Chewing cycle consists of 3 phase in order:

 Opening, closing, and occlusal or intercuspal phase

 Occlusal or intercuspal, opening, and close

 Opening, occlusal, and intercuspal phase

 All are correct

277. What are the three restoring function of a complete denture?

 Aesthetic, mastication, sound

 Mastication, Phonetic, speech

 Sound, speech, aesthetic

 Aesthetic, mastication, Phonetic.

278. What is a complete denture?

 The replacement of all natural teeth in the mandible

 The replacement of all natural teeth in the maxilary

 The replacement of some natural teeth in the maxillay and mandible

 The replacement of all natural teeth in the arch and their associated parts by artificial substitutes

279. What is phonetic function in complete denture?

 One of the most important functions of a complete denture to restore the sound of the patient

 One of the most important functions of a complete denture to restore the speech of the patient.v

 One of the most important functions of a complete denture to restore the sound of a denture

 One of the most important functions of a complete denture to restore the speech of a denture

280. What is denture border?

 Denture border is margin of denture base at junction of the polishing surface and occlusal surface

 Denture border is margin of denture base at junction of the polishing surface and impression surface.

 Denture border is margin of denture base at junction of the impression surface and occlusal surface

 Denture border is margin of denture base at junction of the polishing surface, occlusal surface, and polishing surface

281. What are three the type of morphology of denture teeth?

 Anatomy teeth, semi-anatomy teeth, resin teeth

 Anatomy teeth, semi-anatomy teeth, porcelain teeth

 Anatomy teeth, non-anatomy teeth, composite teeth

 Anatomy teeth, semi-anatomy teeth, non-anatomy teeth.

282. What are the limiting structures in maxillary in complete denture?

 Labial frenum, labial vestibule, buccal frenum, buccal vestibule, hamular notch, and posterior palatal seal area.

 Labial frenum, labial vestibule, buccal frenum, buccal vestibule, Lingual frenum, and posterior palatal seal area

 Lingual frenum, labial vestibule, buccal frenum, buccal vestibule, hamular notch, and posterior palatal seal area

 Labial frenum, labial vestibule, buccal frenum, buccal vestibule, hamular notch, and toris palatin

283. What are the supporting structures?

 Hard palate, postero-lateral slopes of the residual alveolar ridge, toris palatin, maxillary ridge, alveolar tubercle, tuberosity

 Hard palate, postero-lateral slopes of the residual alveolar ridge, rugae, maxillary tuberosity, alveolar tubercle.

 Hard palate, tissue, rugae, maxillary tuberosity, alveolar tubercle.

 Hard palate, frenum, postero-lateral slopes of the residual alveolar ridge, rugae, maxillary tuberosity

284. What are the relief areas?

 Incisive papilla, cispid eminence, mid-palatine raphe, and fovea palatine.

 Incisive canal, canine eminence, mid-palatine raphe, and fovea palatine

 Incisive papilla, cispid eminence, tuberosity, and fovea palatine

 Incisive papilla, cispid eminence, toris palatine, and fovea palatine

285. Where is vibration line?

 Located between the movable and immovable tissues of the soft palate

 Located in front of the movable tissues of the soft palate

 Located behind the movable tissues of the soft palate

 Located in front the immovable tissues of the soft palate

286. A bulbus extension of the residual ridge in the second and third molar region. What is it called?

 Rugae

 Incisive Papilla

 Fovea Palatina

 Maxillary Tuberosity