Study of lingual arch form of ClassⅠmalocclusions after extraction and nonextraction treatment
- VernacularTitle:安氏Ⅰ类错拔牙与非拔牙矫治后舌侧弓形对比分析
- Author:
Zhixin FANG
;
Yan ZHOU
;
Shiwen CHEN
- Publication Type:Journal Article
- Keywords:
Lingual orthodontics;
Dental model;
Arch form
- From:
Journal of Practical Stomatology
1995;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To compare and analyze the maxillary lingual arch forms of ClassⅠmalocclusions after extraction and non-extraction treatment respectively. Methods: 60(30 with extraction, 30 non-extraction)maxillary dental models of ClassⅠmalocclusions after orthodontic treatment were measured in lingual arch widths and depths. The data were analyzed by statistical methods and the charts of lingual arch forms were drawn. Results: The lingual arch widths and depths in anterior segments of the extraction group were significantly larger than those of the non-extraction group(P0.05). The lingual arch forms of the two groups were similar in anterior segments, and more different in premolar and first molar segments, but similar from the distal lingual cusp of the first molars. Conclusion: The lingual arch forms of the two groups are similar in appearances, but the anterior segments of the extraction group are deeper than that of the non-extraction group.
