Natural Development and Changes in Intercanine Widths of Untreated Dentitions

無治療齒列犬齒間寬度的自然發育與變化

李岳澤(Yueh-Tse Lee)

《中華民國齒顎矯正學雜誌》 23卷4期 (2011/12) Pp. 4-12

https://doi.org/10.30036/TJO.201112.0001

摘要

嘗個體成長、適應與老化時，牙弓寬度會受到明顯可見的變化。這個寬度在齒列轉換時期變化得相對較快，一旦功能性永久齒列建立後，小量的寬度變化仍持續可見。維持犬齒間寬度以作為矯正治療後穩定度評估的指標已有許多的研究支持。了解犬齒間寬度的發育與變化對於區分由自然生長或矯正治療產生之變化，訂定矯正治療計畫，以及評估矯正治療後的穩定度與微笑美觀有相當的幫助。本文針對無治療齒列犬齒間寬度的自然發育與變化作文獻的回顧與整理探討，並可建立為評估犬齒間寬度於矯正治療後變化與維持後穩定度的比較標準。（J. Taiwan Assoc. Orthod. 23（4）: 4-12, 2011）

關鍵字

犬齒間寬度

並列摘要

Dental arch dimensions undergo visible alterations as they grow, adapt, and age. Relatively rapid changes occur during the transitional dentition. Once a functional permanent dentition is established, smaller changes continue to be observed. The concept of maintainting of intercanine dimensions as an indicator for posttreatment stability has been supported by studies in the literature. An understanding of the development and changes in intercanine widths helps in distinguishing changes occurred from natural growth or appliance therapy, planning orthodontic treatment, and assessing stability and smile esthetics following orthodontic treatment. This article attempts to review the literature and summarizes the natural development and changes in intercanine widths of untreated dentitions; it will also establish a comparative standard for evaluating treatment changes to intercanine widths and their postretention stability produced by orthodontic treatment. (J. Taiwan Assoc. Orthod. 23(4): 4-12, 2011)

並列關鍵字

intercanine width