上颌侧切牙牙槽骨壁厚度与尖牙关系相关性的锥形束CT研究

doi:10.13591/j.cnki.kqyx.2022.05.008

Abstract

Abstract: Objective To investigate the correlation between the alveolar bone widths of maxillary lateral incisors and canine relationship, and evaluate related factors influencing the alveolar bone morphology of sites for immediate implantation based on cone-beam CT (CBCT). Methods CBCT images of forty-nine patients (a total of 92 maxillary lateral incisors) were selected and canine relationships were determined (Class Ⅰ, Class Ⅱ and Class Ⅲ). The buccal and palatal bone width at both mid-root and apical level (mid-root buccal width/MBW; palatal/MPW; apical buccal width/ABW; palatal/APW) was measured. Then statistical analyses were performed to compare differences of alveolar bone width and their width distribution in three different canine relationships. Results MBW (Ⅰ: (2.94±1.20mm) vs. Ⅲ: (1.97±0.69)mm), ABW (Ⅰ: (1.60±0.55)mm vs. Ⅲ: (2.30±1.03)mm), APW (Ⅰ: (8.52±1.99)mm vs. Ⅲ: (5.78±1.56)mm) along with their distribution in Class Ⅲ canine relationship and MBW (Ⅰ: (2.94±1.20)mm vs. (2.18±1.10)mm), APW (Ⅰ: (8.52±1.99)mm vs. Ⅱ: (6.53±2.34)mm) and their distribution in Class Ⅱ canine relationship were statistically different from Class Ⅰ canine relationship (P＜0.05). Conclusion Compared to Class Ⅰ canine relationship, the root and apex of maxillary lateral incisors with Class Ⅲ relationship are positioned and pointed more towards palatal, which makes the associated palatal alveolar bone relatively thinner and increases the risk of palatal perforation during immediate implantation. Similar conclusions can be drawn from patients with Class Ⅱ canine relationship and proclined upper incisors. Therefore, Class Ⅲ canine relationship and tooth proclination can be potential risk factors for immediate implantation at maxillary incisors.

Key words: immediate implantation, canine relationship, alveolar bone, cone-beam CT

CLC Number:

R783.4

LEI Chen, YU Qun, Khulood Ali ALTAEZI, TANG Chunbo. Cone-beam CT analysis of the correlation between the alveolar bone widths of maxillary lateral incisors and canine relationship[J]. Stomatology, 2022, 42(5): 425-430.

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Cone-beam CT analysis of the correlation between the alveolar bone widths of maxillary lateral incisors and canine relationship

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