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Three dimensional measurements of tooth root resorption after rapid maxillary expansion / 实用口腔医学杂志
Journal of Practical Stomatology ; (6): 65-68, 2018.
Article in Chinese | WPRIM | ID: wpr-697456
ABSTRACT

Objective:

To evaluate the change of tooth root volume and length after rapid maxillary expansion by CBCT three dimensional reconstruction method.

Methods:

33 patients underwent rapid maxillary expansion were examined by CBCT before and after treatment. The CBCT images of the first,second premolars and the first molars were segmented and reconstructed by Mimics image processing software for the analysis of the changes of root volume and length. All data were analyzed by SPSS software statistically.

Results:

After maxillary expansion,all root volumes were reduced(P < 0. 05),more reduction was observed in anchorage teeth than in non-anchorage teeth(P < 0. 05). The length of most teeth roots was not decreased(P> 0. 05) except the buccal and distal roots of the first molars(P < 0. 05).

Conclusion:

Rapid maxillary expansion may result in root resorption and this resorption is mainly based on the volume decrease.

Full text: Available Index: WPRIM (Western Pacific) Language: Chinese Journal: Journal of Practical Stomatology Year: 2018 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Language: Chinese Journal: Journal of Practical Stomatology Year: 2018 Type: Article