Long-Term Stability after Orthodontic Treatment-Literature Review

齒顎矯正治療後之穩定度－文獻回顧

白健蓉(Betty Chien-Jung Pai) ； 黃炯興(Chiung-Shing Huang)

《中華民國齒顎矯正學雜誌》 17卷2期 (2005/06) Pp. 29-34

https://doi.org/10.30036/TJO.200506.0005

摘要

如何維持良好的矯正治療結果一直困擾著許多矯正醫師。經過一系列的文獻報導並加以整理1．在治療過程中應必免增加犬齒及第一大臼齒的寬度。2．治療後犬齒及第一大臼齒寬度的減少有相對的觀係。3．隨著時間的增加Overbite會越來越深。4．當overbite越深overjet也就越大。5．上顎及下顎的牙弓隨著時間增加會越來越擁擠。6．維持器的種類及戴的時間長短無法維持矯正後的結果。7．矯正中使用的方法，治療前overbite和overjet及擁擠的程度與治療後的結果並無相對的關係。

關鍵字

犬齒的寬度 ； 第一大臼齒的寬度 ； overbite ； overjet ； irregularity index

並列摘要

Long-term stability is one of the treatment goals of orthodontics especially with a long lasting treatment and a painful experience for the patients. Intermolar width, intercanine width, overjet, overbite, and irregularity index after orthodontic treatment were reviewed. 1. To prevent relapse of intermolar and intercanine width, overexpansion should be avoided in both extraction and nonextraction groups. 2. Posttreatment decrease in width of the maxillary and mandibular arches was directly related to each other. 3. Overbite tended to increase after treatment. 4. As the overbite increased after treatment, the overjet also tended to increase. 5. The maxillary and mandibular arches tended to become more crowded after treatment. 6. Prediction of amount of relapse after retention is impossible. 7. The type of retainer and the longer period of the retainer wearing cannot prevent relapse after postretention. 8. Type of malocclusion, severity of anterior crowding, amount of overbite and overjet in pretreatment, and type of orthodontic mechanic used were not correlated with amount of relapse after postretention.

並列關鍵字

intermolar width ； intercanine width ； overjet ； overbite and irregularity index