口腔疾病防治2024，Vol.32Issue(6)：444-450,7.DOI:10.12016/j.issn.2096-1456.2024.06.006
锥形束CT测量成人上颌前磨牙根尖与上颌窦位置关系及其对即刻种植的影响
Measurement of the relationship between maxillary premolar roots and the maxillary sinus floor using cone beam CT and analysis of the impact on immediate implantation
摘要
Abstract
Objective To analyze the spatial relationship between the roots of maxillary anterior premolars and the maxillary sinus,thus providing an anatomical basis for timing,planning,surgical approaches,and implant selection at this site.Methods Cone beam CT(CBCT)images were collected from 264 patients(aged 20-65 years)who visited the Ruihua Dental Clinic between January 2017 and March 2023.The minimum distance from the apex of the maxillary an-terior premolar roots to the lower wall of the maxillary sinus was measured on the coronal plane.The classification of the vertical relationship between the tooth root and the lower wall of the maxillary sinus was performed,and comparisons were made bilaterally,between genders,and among different age groups.Results The minimum distance(Q50)from the apex of the first maxillary premolar root to the lower wall of the maxillary sinus was 7.34 mm for the single-root type,7.80 mm for the buccal root of the double-root type,and 7.36 mm for the palatal root.For the second maxillary premo-lar,the median distance was 2.56 mm for the single root type,1.73 mm for the buccal root type,and 1.23 mm for the palatal root type.There was a significant difference in the shortest distance from the apex of the right second maxillary premolar single root to the lower wall of the maxillary sinus among the different age groups(P＜0.05),with the 20-29-year-old group having the smallest median distance(1.52 mm)and the≥40-year-old group having the largest(4.44 mm).There was no significant difference in the effect of sex or laterality on distance(P＞0.05).The most common vertical relationship between the apex of the maxillary anterior premolar roots and the lower wall of the maxillary sinus was non-contact.There was no significant difference in the vertical relationship classification between the single-root and dou-ble-root types(P＞0.05).Conclusion Most maxillary first premolar roots can provide sufficient bone height,which makes it easy to achieve immediate implantation.The maxillary second premolar root frequently involves insufficient bone,which is necessary to make full use of the bone wall of the extraction socket or the sinus floor cortical bone to achieve initial stability.The vertical relationship between the premolar root and maxillary sinus was influenced by age and dental position.Younger age groups often exhibit inadequate bone height,and the indication for immediate implan-tation should be carefully considered.The number of roots does not significantly affect the relationship between the sinus and root;however,double-rooted premolars offer more support for immediate implantation and socket healing due to the small root diameter and bony separation between the roots.关键词
上颌前磨牙/上颌窦/牙根/锥形束CT/最短距离/牙根数量/垂直关系/即刻种植Key words
maxillary premolars/maxillary sinus/root/cone beam CT/the shortest distance/the number of roots/vertical relationship/immediate implant分类
医药卫生引用本文复制引用
刘昕,丁子凌,杨晓喻,刘楚峰,梁仲朗,黄乐颐..锥形束CT测量成人上颌前磨牙根尖与上颌窦位置关系及其对即刻种植的影响[J].口腔疾病防治,2024,32(6):444-450,7.基金项目
广东省自然科学基金项目(2018A0303130261) This study was supported by the grants from Natural Science Foundation of Guangdong Province(No.2018A0303130261). （2018A0303130261）
