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首页> 外文期刊>Swedish dental journal. >Timing of mineralization of homologues permanent teeth - An evaluation of the dental maturation in panoramic radiographs
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Timing of mineralization of homologues permanent teeth - An evaluation of the dental maturation in panoramic radiographs

机译：同系恒牙矿化的时间-全景X射线照片中牙齿成熟度的评估

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Clinically the condition Molar Incisor Hypomineralization (MIH), varies considerably between individuals, where any number of molars, from one to all four permanent first molars, may be affected with different degrees of hypomineralized enamel within the same dentition. An explanation to these variations could be that the start of the enamel mineralization differs between homologues teeth. The aim of this study was to compare the dental development between homologues teeth in digital panoramic radiographs (PRs), from children aged 7 to 11 years, using the Gleiser & Hunt method on second and third molars and to calculate the crown/root ratio for the mandibular premolars. 77 PRs, from individuals between 7.3 and 11.0 years of age, were studied. Differences in developmental stages between homologues teeth (second and third molars) were studied. In 72 of these PRs, the crown/root ratio of mandibular premolars was also compared. In 31 of the PRs, a difference in development was found between the right and left maxillary second molar. In 22 PRs, a difference in development between the right and left mandibular second molar was found. In 17 of the PRs, a difference in development was found between the right and left maxillary third molars. In 26 PRs, a difference in-between the right and left mandibular third molar was found. In 72 PRs, the crown/root ratio of mandibular premolars was measured and differences were found. All these differences were significant. A possible explanation to the variations in expressivity of MIH may be a result of differences in the start of mineralization between homologues teeth. Timing of mineralization of homologues permanent teeth-An evaluation of the dental maturation in panoramic radiographs.
机译：在不同个体之间，摩尔磨牙门牙低矿化（MIH）的临床状况差异很大，在同一牙列中，从一个到全部四个永久性第一磨牙的任何数量的磨牙可能会受到不同程度的矿化程度低的牙釉质的影响。对这些变化的解释可能是在同系牙之间牙釉质矿化的开始是不同的。这项研究的目的是在第二和第三磨牙上使用Gleiser＆Hunt方法，比较7至11岁儿童的数字全景X线照片（PR）中同系牙齿之间的牙齿发育，并计算牙冠的根冠比下颌前磨牙。研究了来自7.3至11.0岁之间的个人的77个PR。研究了同龄人牙齿（第二和第三磨牙）在发育阶段的差异。在这些PR中的72个中，还比较了下颌前磨牙的冠根比。在31个PR中，左右上颌第二磨牙之间存在发育差异。在22个PR中，发现左右下颌第二磨牙之间的发育差异。在17个PR中，在左右上颌第三磨牙之间发现了发育差异。在26个PR中，发现左右下颌第三磨牙之间存在差异。在72个PR中，测量了下颌前磨牙的冠根比，发现了差异。所有这些差异都是显着的。 MIH表达能力变化的可能解释可能是同源齿之间矿化开始不同的结果。同源恒牙的矿化时间-全景X射线照片中牙齿成熟度的评估。

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