用戶【Notorious】點評問題和點評內容

【評論主題】44.恆牙上顎第一小臼齒與下顎第一大臼齒發生牙冠斷裂(crown fracture or cracking)時,最常發生於下列何處?(A)咬頭(cusp tip)(B)橫嵴(transverse ri

【評論內容】The most likely places involve developmental grooves (Figure 13-26), often in relation to restorations. Fractures of cusps of the maxillary first premolar and mandibular first molars often occur along developmental grooves or stress lines as shown in Figure 13-26. Such fractures may occur in connection with bruxism and clenching. It is not uncommon for the distolingual cusp of the mandibular first molar to fracture in association with a large restoration, which leads to pulpitis.

From Wheeler's Dental Anatomy

...

【評論主題】16.關於內頸動脈的敘述,下列何者正確?(A)自總頸動脈分出後,偏於外頸動脈的內側上行進入顱腔(B)位於胸鎖乳突肌的前外緣且未被該肌肉所覆蓋(C)眼動脈為其分支(D)與膈神經及內頸靜脈共同被頸動脈鞘所

【評論內容】15.下列有關頭頸部之血管供應的敘述,何者錯誤?(A)口腔結構與相鄰區域的動脈,除少數的例外,主要均為內頸動脈的分枝(B)部分的鼻腔及顏面上半部可接納來自內頸動脈的分枝(C)總頸動脈可分出位置偏後內側(posteromedially)的內頸動脈與位置偏前外側 (anterolaterally)的外頸動脈(D)總頸動脈分枝處的內頸動脈稍膨大形成頸動脈竇(carotid sinus),其對血壓反射調節極 為重要104-2(C) 是正確的牙醫學(一)(包括口腔解剖學、牙體形態學、口腔組織與胚胎學、生物化學等科目及其臨床相關知識)- 104 年 - 104-2 專技高考_牙醫學(一):牙醫學(一)(包括口腔解剖學、牙體形態學、口腔組織與胚胎學、生物化學等科目及其臨床相關知識)#35911

15....

【評論主題】44.下列那一種牙科常用補綴物材料,可利用石膏結合包埋材進行鑄造?(A)金銀鈀合金 (B)純鈦 (C)鈷鉻合金 (D)熱壓式全瓷冠(heat pressed all-ceramic crowns)

【評論內容】

The gypsum-based materials represent the type traditionally used for conventional casting of gold alloy inlays,onlays, crowns, and larger fixed dental prostheses (FDPs).

Phosphate-based investments are designed primarily foralloys used to produce copings or frameworks for metal-ceramic prostheses (Chapter 18) and some base metal alloys.It can also be used for pressable ceramics.

A third type is theethyl silicate–bonded investment, which is used principallyfor the casting of removable partial dentures made from basemetals (cobalt-based and nickel-based a...