用戶【robertwang】點評問題和點評內容

【評論主題】75.下列四類用於鎮靜的藥物,何者依賴性(dependence liability)最少?(A)antihistamine類 (B)prototype phenobarbital類 (C)protot

【評論內容】

(D)prototype propanediol類

Propanedioland Glycerol Derivatives

Thegroup of propanediol and glycerol derivatives includes several traditionalagents, most of which are used as centrally acting muscle relaxants. They have,however, many effects in common with benzodiazepines. Meprobamate, apropanediol carbamate, was considered the agent of choice for the treatment ofanxiety in the mid-1950s. Withthe discovery of the addictive properties of this compound and theintroduction of benzodiazepines, its popularity declined rapidly…

(Ref: Pharmacology and Therapeutics for Dentistr...

【評論主題】42.關於石膏結合包埋材(gypsum-bonded investment)的吸水膨脹(hygroscopic expansion),下列何者錯誤?(A)氧化矽(silica)的顆粒愈細,吸水膨脹越大

【評論內容】

課本Phillips_ Science of Dental Materials 12e P203-204

VARIABLES THAT AFFECT HYGROSCOPIC EXPANSION

    The magnitude of the hygroscopic setting expansionof a dental investment is generally proportional to the silica content of theinvestment, other factors being equal. The finer the particle size of the silica, the greater isthe hygroscopic expansion. In general, α-hemihydrate is apt to produce a greater hygroscopicexpansion in the presence of silica than is the β-hemihydrate, particularlywhen the expansion is unrestricted.

    A dental investmentshould have enough...