Spontaneous eruption of impacted second molars.
Spontaneous eruption of impacted second molars.
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DOI：
10.1016/j.pio.2011.04.001
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发表时间：
2011-11-01
影响因子：
4.8
通讯作者：
Maspero, Cinzia
中科院分区：
文献类型：
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作者：
Farronato, Giampietro;Giannini, Lucia;Maspero, Cinzia
目的：提出第二磨牙阻生的治疗方案。材料与方法：将患者随机分为两组，每组20例。第一组患者行手术切除覆盖保留牙齿的黏膜；第二组为对照组，不进行治疗，仅进行观察。保留牙总数为66颗（第一组34颗，对照组32颗）。卡方检验比较了两组的爆发发生率。我们通过计算风险比（RR）和95%置信区间（95% CI）来比较治疗组与对照组的爆发频率。结果：32颗牙在拔除粘膜后出现了萌牙，而对照组只有3颗牙在观察期间出现了萌牙。两组间差异有统计学意义。未出牙中，近中倾斜牙位20颗，垂直牙位12颗。结论：拔除覆盖牙齿的黏膜后，有几例患者的第二磨牙可以长出。这是一种保守的方法，不排除后续不同治疗的可能性。因此，在制定治疗方案时必须将其纳入治疗方案。
OBJECTIVES: To propose a treatment protocol for the management of impacted second molars.MATERIALS AND METHODS: Patients were randomly divided into two equal groups (20 patients in each). The patients in the first group underwent a surgical removal of the mucosa covering retained teeth; the second group was the control group and patients were not treated but only observed. The total number of retained teeth considered were 66 (34 in the first group and 32 in the control group). A Chi squared test has been performed to compare the prevalence of eruption in the two groups. We compared the frequency of eruption for the treatment compared to the control group by calculating the risk ratio (RR) and 95% confidence interval (95% CI).RESULTS: Eruption occurred in 32 teeth after surgical removal of the mucosa while in the control group only 3 teeth erupted in the considered period. The difference between the two groups showed statistically significant. Among the non erupted teeth, 20 were positioned with a mesial inclination and 12 were positioned vertically.CONCLUSIONS: The results show that the removal of the mucosa covering teeth allows in several cases second molars to erupt. It's a conservative method which doesn't exclude the possibility of a successive different therapy. Therefore it must be considered among the treatment options during treatment planning.