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首页> 外文期刊>Pediatric dentistry >Effects of different combinations of fused primary teeth on eruption of the permanent successors
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Effects of different combinations of fused primary teeth on eruption of the permanent successors

机译：融合乳牙不同组合对永久后继者萌发的影响

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Purpose: The fusion of primary teeth may be associated with the absence of 1 of the 2 permanent successors. Moreover, even if both successors erupt, developmental disturbances such as microdontia or delayed tooth formation may occur. The purpose of this study was to elucidate the effects of different combinations of fused primary teeth on the eruption of permanent successors. Methods: One hundred ninety-seven children with 247 fused primary teeth were examined. Combinations of primary teeth involved in the fusion were identified, and the effects of these different combinations on the presence, morphology, and eruption of the permanent successors were determined. Results: Three types of fusion in the primary teeth were identified: (1) between the maxillary central and lateral incisors (UCI/LI); (2) between the mandibular central and lateral incisors (LCI/LI); and (3) between the mandibular lateral incisor and canine (LLI/C). The results revealed an absence of the successional lateral incisor in 65% of UCI/LI cases and 74% of LLI/C cases, whereas only 16% of LCI/LI cases resulted in a missing successor. Conclusions: Fused primary teeth are highly correlated with the absence of permanent teeth, and the prevalence depends on the combination of fused primary teeth.
机译：目的：乳牙融合可能与2个永久后继者中的1个不相关。此外，即使两个后继者都爆发，也可能发生发育障碍，例如小牙畸形或牙齿延迟形成。这项研究的目的是阐明融合的乳牙的不同组合对永久后继者萌发的影响。方法：检查了197例247颗融合乳牙的儿童。确定了融合中涉及的乳牙的组合，并确定了这些不同组合对永久后继者的存在，形态和爆发的影响。结果：在乳牙中发现了三种融合类型：（1）上颌中切牙和侧切牙之间的融合（UCI / LI）; （2）在下颌中切牙和下切牙之间（LCI / LI）; （3）下颌侧切牙和犬齿之间（LLI / C）。结果显示，在65％的UCI / LI病例和74％的LLI / C病例中不存在连续的切牙，而仅16％的LCI / LI病例导致后继者缺失。结论：融合的乳牙与不存在恒牙高度相关，其患病率取决于融合的乳牙的组合。

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