Periodontal observations in twins.
Periodontal observations in twins.
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双胞胎牙周观察。
DOI：
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发表时间：
1969
影响因子：
3.5
通讯作者：
J. J. Cunat
中科院分区：
文献类型：
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作者：
S. Ciancio;S. Hazen;J. J. Cunat
26组双胞胎，年龄从12-17岁，在这项研究中进行了检查。7对双胞胎是单合子，19对是双合子。使用修改的Ramfjord周期指数对每组进行以下观察：
1.用Williams-Fox探针测量牙龈退缩。2.使用Williams-Fox探针测量裂隙深度。对每颗牙齿的近中、远中、面部和舌侧进行六次测量。3.根据炎症程度对六颗牙齿（如Ramfjord所述）周围的牙龈健康进行评分。4.根据存款量对龈上结石进行评分。5.根据牙菌斑的数量对牙菌斑进行评分。双胞胎是单合子还是双合子的决定是基于血液因子的检查。如果观察到任何差异，则认为该组为非合子。
本研究的结果可总结如下：
(a)没有证据支持牙龈退缩或牙龈裂隙深度是一种遗传特征的概念。
(b)两组间牙龈评分、牙石评分和菌斑评分无显著差异。
Twenty-six groups of twins, with ages ranging from 12–17 years, were examined in this study. Seven sets of twins were monozygous and nineteen sets were dyzygous. The following observations were made on each set using a modification of the Ramfjord Periodontal Index:
1. Gingival recession was measured with a Williams-Fox probe. 2. Crevicular depth was measured using a Williams-Fox probe. Six measurements were made for each tooth on the mesial, distal, facial and lingual aspects. 3. Gingival health around each of six teeth (as outlined by Ramfjord) was scored on the basis of the degree of inflammation. 4. Supragingival calculus was scored on the basis of the amount of deposit. 5. Dental plaque was scored on the basis of amount of stainable plaque. The determination as to whether the twins were monozygous or dyzygous was based on an examination of blood factors. If any difference was noted, the set was considered to be dyzygous.
The results of this study can be summarized as follows:
(a) No evidence was found to support the concept that gingival recession or gingival crevice depth is an inherited characteristic.
(b) No significant difference was found between both groups for the gingival score, calculus score, and plaque score.