牙醫學(三)（包括齒內治療學、牙體復形學、牙周病學等科目及其相關臨床實例與醫學倫理）題庫下載題庫

(A)細菌容易躲藏在牙根分岔處,牙根幹越長意味著牙根分岔處越下面,清潔也就越不容易,預後差才對

(B)正確：根據Carranza's clinical periodontoly p.376

The center of rotation of the tooth  be nearer the crown results in a more favorable distribution of forces to the periodontium and less tooth mobility.

因此旋轉中心靠牙冠的牙齒預後較好

(C)正確：根據Carranza's clinical periodontoly p.377

Patients with slight-to-moderate periodontitis who stop smoking can often be upgraded to a good prognosis, whereas those with severe periodontitis who stop smoking may be upgraded to a fair prognosis.

(D)正確：根據Carranza's c...

(A)細菌容易躲藏在牙根分岔處,牙根幹越長意味著牙根分岔處越下面,清潔也就越不容易,預後差才對

(B)正確：根據Carranza's clinical periodontoly p.376

The center of rotation of the tooth  be nearer the crown results in a more favorable distribution of forces to the periodontium and less tooth mobility.

因此旋轉中心靠牙冠的牙齒預後較好

(C)正確：根據Carranza's clinical periodontoly p.377

Patients with slight-to-moderate periodontitis who stop smoking can often be upgraded to a good prognosis, whereas those with severe periodontitis who stop smoking may be upgraded to a fair prognosis.

(D)正確：根據Carranza's clinical periodontoly p.378

Ａnatomic considerations that present accessibility problems are developmental grooves, root proximity, and furcation involvements. The presence of any of these can worsen the prognosis.