Morphological changes of the anterior alveolar bone due to retraction of anterior teeth: a retrospective study
Abstract Backgroud To analyze the morphological changes of the anterior alveolar bone after the retraction of incisors in premolar extraction cases and the relationship between incisor retraction and remodeling of the alveolar base represented by points A and B displacements. Methods Pre- (T0) and p...
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| Format: | Article |
| Language: | English |
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BMC
2021-07-01
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| Series: | Head & Face Medicine |
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| Online Access: | https://doi.org/10.1186/s13005-021-00277-z |
| _version_ | 1819154788770643968 |
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| author | Qiannan Sun Wenhsuan Lu Yunfan Zhang Liying Peng Si Chen Bing Han |
| author_facet | Qiannan Sun Wenhsuan Lu Yunfan Zhang Liying Peng Si Chen Bing Han |
| author_sort | Qiannan Sun |
| collection | DOAJ |
| description | Abstract Backgroud To analyze the morphological changes of the anterior alveolar bone after the retraction of incisors in premolar extraction cases and the relationship between incisor retraction and remodeling of the alveolar base represented by points A and B displacements. Methods Pre- (T0) and post-treatment (T1) lateral cephalograms of 308 subjects in the maxilla and 154 subjects in the mandible who underwent the orthodontic treatment with extraction of 2 premolars in upper or lower arches were included. Alveolar bone width and height in both the maxillary and mandible incisor area were measured at T0 and T1 respectively. By superimposing the T0 and T1 cephalometric tracings, changes of points A and B, and the movement of the incisors were also measured. Then the correlation between incisor movement and the displacements of points A and B was analyzed. Results The alveolar bone width (ABW) showed a significant decrease in both maxilla and mandible (P < 0.001) except the labial side of the mandible (P > 0.05). The alveolar bone height (ABH) showed a significant increase in the labial side of maxilla and a significant decrease in the lingual side of maxilla and mandible. A strong positive correlation was verified between incisor movement and position changes of points A and B in both horizontal and vertical directions. Conclusions Anterior alveolar bone width and height generally decreased after orthodontic treatment. Incisor retraction led to significant position changes of points A and B. The decrease of anterior alveolar bone due to significant incisor retraction should be taken into account in treatment planning. |
| first_indexed | 2024-12-22T15:26:39Z |
| format | Article |
| id | doaj.art-8ac25ded28314b07a1a55ca303061317 |
| institution | Directory Open Access Journal |
| issn | 1746-160X |
| language | English |
| last_indexed | 2024-12-22T15:26:39Z |
| publishDate | 2021-07-01 |
| publisher | BMC |
| record_format | Article |
| series | Head & Face Medicine |
| spelling | doaj.art-8ac25ded28314b07a1a55ca3030613172022-12-21T18:21:28ZengBMCHead & Face Medicine1746-160X2021-07-0117111210.1186/s13005-021-00277-zMorphological changes of the anterior alveolar bone due to retraction of anterior teeth: a retrospective studyQiannan Sun0Wenhsuan Lu1Yunfan Zhang2Liying Peng3Si Chen4Bing Han5Department of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental MaterialsDepartment of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental MaterialsDepartment of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental MaterialsDepartment of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental MaterialsDepartment of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental MaterialsDepartment of Orthodontics, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Computerized Dentistry Ministry of Health & NMPA Key Laboratory for Dental MaterialsAbstract Backgroud To analyze the morphological changes of the anterior alveolar bone after the retraction of incisors in premolar extraction cases and the relationship between incisor retraction and remodeling of the alveolar base represented by points A and B displacements. Methods Pre- (T0) and post-treatment (T1) lateral cephalograms of 308 subjects in the maxilla and 154 subjects in the mandible who underwent the orthodontic treatment with extraction of 2 premolars in upper or lower arches were included. Alveolar bone width and height in both the maxillary and mandible incisor area were measured at T0 and T1 respectively. By superimposing the T0 and T1 cephalometric tracings, changes of points A and B, and the movement of the incisors were also measured. Then the correlation between incisor movement and the displacements of points A and B was analyzed. Results The alveolar bone width (ABW) showed a significant decrease in both maxilla and mandible (P < 0.001) except the labial side of the mandible (P > 0.05). The alveolar bone height (ABH) showed a significant increase in the labial side of maxilla and a significant decrease in the lingual side of maxilla and mandible. A strong positive correlation was verified between incisor movement and position changes of points A and B in both horizontal and vertical directions. Conclusions Anterior alveolar bone width and height generally decreased after orthodontic treatment. Incisor retraction led to significant position changes of points A and B. The decrease of anterior alveolar bone due to significant incisor retraction should be taken into account in treatment planning.https://doi.org/10.1186/s13005-021-00277-zAlveolar bone morphologyIncisor retractionOrthodontic extraction treatmentPoint APoint B |
| spellingShingle | Qiannan Sun Wenhsuan Lu Yunfan Zhang Liying Peng Si Chen Bing Han Morphological changes of the anterior alveolar bone due to retraction of anterior teeth: a retrospective study Head & Face Medicine Alveolar bone morphology Incisor retraction Orthodontic extraction treatment Point A Point B |
| title | Morphological changes of the anterior alveolar bone due to retraction of anterior teeth: a retrospective study |
| title_full | Morphological changes of the anterior alveolar bone due to retraction of anterior teeth: a retrospective study |
| title_fullStr | Morphological changes of the anterior alveolar bone due to retraction of anterior teeth: a retrospective study |
| title_full_unstemmed | Morphological changes of the anterior alveolar bone due to retraction of anterior teeth: a retrospective study |
| title_short | Morphological changes of the anterior alveolar bone due to retraction of anterior teeth: a retrospective study |
| title_sort | morphological changes of the anterior alveolar bone due to retraction of anterior teeth a retrospective study |
| topic | Alveolar bone morphology Incisor retraction Orthodontic extraction treatment Point A Point B |
| url | https://doi.org/10.1186/s13005-021-00277-z |
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