PDF(Sci-hub)
Abstract：
OBJECTIVE: To investigate the adequacy of potential sites for insertion of orthodontic mini-implants (OMIs) in the anterior alveolar region (delimited by the first premolars) through a systematic review of studies that used computed tomography (CT) or cone beam CT (CBCT) to assess anatomical hard tissue parameters, such as bone thickness, available space, and bone density.
METHODS: MEDLINE, EMBASE, and the Cochrane Database of Systematic Reviews were searched to identify all relevant papers published between 1980 and September 2011. An extensive search strategy was performed that included the key words \"computerized (computed) tomography\" and \"mini-implants.\" Information was extracted from the eligible articles for three anatomical areas: maxillary anterior buccal, maxillary anterior palatal, and mandibular anterior buccal. Quantitative data obtained for each anatomical variable under study were evaluated qualitatively with a scoring system.
RESULTS: Of the 790 articles identified by the search, 8 were eligible to be included in the study. The most favorable area for OMI insertion in the anterior maxilla (buccally and palatally) and mandible is between the canine and the first premolar. The best alternative area in the maxilla (buccally) and the mandible is between the lateral incisor and the canine, while in the maxillary palatal area it is between the central incisors or between the lateral incisor and the canine.
CONCLUSIONS: Although there is considerable heterogeneity among studies, there is a good level of agreement regarding the optimal site for OMI placement in the anterior region among investigations of anatomical hard tissue parameters based on CT or CBCT scans. In this context, the area between the lateral incisor and the first premolar is the most favorable. However, interroot distance seems to be a critical factor that should be evaluated carefully.
METHODS: MEDLINE, EMBASE, and the Cochrane Database of Systematic Reviews were searched to identify all relevant papers published between 1980 and September 2011. An extensive search strategy was performed that included the key words \"computerized (computed) tomography\" and \"mini-implants.\" Information was extracted from the eligible articles for three anatomical areas: maxillary anterior buccal, maxillary anterior palatal, and mandibular anterior buccal. Quantitative data obtained for each anatomical variable under study were evaluated qualitatively with a scoring system.
RESULTS: Of the 790 articles identified by the search, 8 were eligible to be included in the study. The most favorable area for OMI insertion in the anterior maxilla (buccally and palatally) and mandible is between the canine and the first premolar. The best alternative area in the maxilla (buccally) and the mandible is between the lateral incisor and the canine, while in the maxillary palatal area it is between the central incisors or between the lateral incisor and the canine.
CONCLUSIONS: Although there is considerable heterogeneity among studies, there is a good level of agreement regarding the optimal site for OMI placement in the anterior region among investigations of anatomical hard tissue parameters based on CT or CBCT scans. In this context, the area between the lateral incisor and the first premolar is the most favorable. However, interroot distance seems to be a critical factor that should be evaluated carefully.
摘要：
目的：通过对使用计算机断层扫描（CT）或锥形束CT（CBCT）评估解剖学硬组织参数的研究的系统回顾，研究在前牙槽区（由第一前磨牙界定）插入正畸微型植入物（OMIs）的潜在部位的充分性。比如骨骼厚度，可用空间,和骨密度。
方法：MEDLINE，EMBASE,检索Cochrane系统评价数据库,以确定1980年至2011年9月发表的所有相关论文。进行了广泛的搜索策略，其中包括关键词“计算机（计算机）断层扫描”和“微型植入物”。“信息是从三个解剖区域的合格文章中提取的：上颌前颊，上颌前腭,和下颌前颊。用评分系统定性评估研究中每个解剖变量的定量数据。
结果：在搜索确定的790篇文章中，8人符合纳入研究的条件。在前上颌骨（颊和腭）和下颌骨中插入OMI的最有利区域是在犬齿和第一前磨牙之间。上颌骨（颊侧）和下颌骨的最佳替代区域是在侧切牙和犬齿之间，而在上颌pal区，它位于中切牙之间或侧切牙和犬齿之间。
结论：尽管研究之间存在相当大的异质性，在基于CT或CBCT扫描的解剖学硬组织参数的研究中,关于OMI在前部区域的最佳放置位置的一致性很好.在这种情况下，侧切牙和第一前磨牙之间的区域是最有利的。然而,根间距离似乎是一个关键因素，应该仔细评估。
方法：MEDLINE，EMBASE,检索Cochrane系统评价数据库,以确定1980年至2011年9月发表的所有相关论文。进行了广泛的搜索策略，其中包括关键词“计算机（计算机）断层扫描”和“微型植入物”。“信息是从三个解剖区域的合格文章中提取的：上颌前颊，上颌前腭,和下颌前颊。用评分系统定性评估研究中每个解剖变量的定量数据。
结果：在搜索确定的790篇文章中，8人符合纳入研究的条件。在前上颌骨（颊和腭）和下颌骨中插入OMI的最有利区域是在犬齿和第一前磨牙之间。上颌骨（颊侧）和下颌骨的最佳替代区域是在侧切牙和犬齿之间，而在上颌pal区，它位于中切牙之间或侧切牙和犬齿之间。
结论：尽管研究之间存在相当大的异质性，在基于CT或CBCT扫描的解剖学硬组织参数的研究中,关于OMI在前部区域的最佳放置位置的一致性很好.在这种情况下，侧切牙和第一前磨牙之间的区域是最有利的。然而,根间距离似乎是一个关键因素，应该仔细评估。
