A case of occlusal guidance with supernumerary tooth and odontoma

Supernumerary teeth and odontoma are frequently noted in clinical pedodontic cases,and it is necessary to treat them at an early stage. In this study, we encountered a patient in whom occlusal abnormalities occurred due to the existence of a supernumerary tooth and odontoma in an adjacent area. Regarding treatment, we extracted the supernumerary tooth and excised the odontoma under general anesthesia. Thereafter, in the following year, we initiated a dynamic approach to resolve the malocclusion using the multi–bracket method. We will continue treatment, while carefully observing the patientʼs dentition and occlusal growth. Because there have been few clinical reports on such cases, treatment may be difficult ; therefore, it is expected that other similar cases will be reported in the futur

Craniofacial morphology of class III malocclusion with DUSP6 gene: Mutation and non-mutation groups

The etiology of developing class III malocclusion and the role of craniofacial structures in this phenotype remain indistinct. The purpose of this study was to compare the relative relationship of craniofacial structures of DUSP6 gene mutation and non-mutation groups in class III malocclusion of Malaysian Malay families and their three generations. Thirty class III cephalometric radiographs of ten Malaysian Malay families including three generations with an average age 23, 54 and 79 years of each generation respectively were studied. All landmarks were positioned, determined and consequently tracings were completed Romexis software (Planmeca, Finland) to accomplish craniofacial morphology investigation. The statistical comparisons of the mutation and non-mutation group were conducted with independent t test and analysis of variance (ANOVA) was applied to evaluate the values for three generations in class III malocclusion among all measurements. The result of the current study revealed that in mutation group, there are significant differences in Co-Gn-B and SN-MDP variables compare to non-mutation group. However, almost all craniofacial variables show no significant differences among three generations. This study may suggest that in mutation group mandible is more deviated from cranial base compare to non-mutation group and there are virtually no skeletal changes among three generations with age in case of growing class III malocclusion

子どもの前歯についての意識調査 乳前歯の審美的修復の意義

乳前歯の修復治療を受けた2-7歳の小児歯科患者105名とその母親とを対象として,前歯の審美的影響についての意識調査を質問紙法で行い,下記の結果を得た.1.来院の動機として「痛くはなかったが,ムシ歯ができたのでその治療のため」と答えた者が全体の2/3近くもあり,母親の歯科的健康についての意識の向上がうかがわれた.2.約半数の者が,真先に治療してほしい部位として「上の前歯」を挙げた.また,その理由として「みっともないから」が,母親では3位,子ども自身では1位を占め,上顎前歯の審美的修復の要求が極めて強く存在することが明らかとなった.3.前歯の状態が子どもの心理や行動に及ぼす影響については,1-2歳児では必ずしも明らかではないが,3歳半以降では,ムシ歯や薬物塗布による黒変が消極的な行動特性と関係し,それがきれいに修復されることにより劇的な行動変化を生じることを認めた母親が少なくなかった.家庭や保育園などのエピソードが数多く報告され,特に子どもの対人関係において大きな影響があることが明らかにされた.4.圧倒的多数の母親が,子どもの前歯の状態が心理や行動に影響を及ぼすことが認め,「どんな子どもでもきちんときれいに」治してほしいと望んでいた.「乳歯だから齲蝕の進行抑制のみでよい」との答えはわずか2%にすぎなかっ