Impact of maxillary sinus floor on the mesial movement of maxillary first molar

To investigate the impact of maxillary sinus floor on the mesial movement of maxillary first molar. Orthodontic patients with maxillary first premolars extracted were selected. Their maxillary first molars were divided into case group and control group according to whether their roots were in contac...

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Bibliographic Details
Published inShanghai kou qiang yi xue Vol. 31; no. 6; p. 661
Main Authors Zhou, Zi-Qian, Chen, Zhen-Qi
Format Journal Article
LanguageChinese
Published China 01.12.2022
Subjects
Bicuspid
Humans
Maxilla
Maxillary Sinus - diagnostic imaging
Molar
Root Resorption
Sinus Floor Augmentation
Tooth Root
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Summary:To investigate the impact of maxillary sinus floor on the mesial movement of maxillary first molar. Orthodontic patients with maxillary first premolars extracted were selected. Their maxillary first molars were divided into case group and control group according to whether their roots were in contact with the maxillary sinus floor. The case group was further divided into three subtypes according to the depth of the root extruded into the maxillary sinus. A total of 64 maxillary first molars from 32 patients were enrolled in this study, including 34 in the case group (five in subtype Ⅱ, fourteen in subtype Ⅲ, and 15 in subtype Ⅳ) and 30 in the control group. The mesial movement distance of each root and crown and the inclination of each root long axis were measured, and resorption of each root was evaluated. SPSS 22.0 software package was used for data analysis. After orthodontic treatment, the mesial movement distance of roots from both groups were all lager than 2 mm. The mesial movement distance of the crow
ISSN:1006-7248