Etiology of class-III malocclusion is generally believed to be genetic. A wide range of environmental factors have been suggested as contributing factors for the development of class-III malocclusion. Twin study is one of the most effective methods available for investigating genetically determined variables of malocclusion. Discordancy for class-III malocclusion is a frequent finding in dizygo...

OBJECTIVE The displacement of the hyoid bone (HB) is a critical biomechanical component of the swallowing function. The aim of this study was to evaluate the swallowing-induced vertical and horizontal displacements of the HB in subjects with 2 different magnitudes of skeletal Class III malocclusion, by means of real-time, balanced turbo-field-echo (B-TFE) cine-magnetic resonance imaging. METH...

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下顎前突症は比較的多 くみ られ る不正咬合を主徴 とす る顎骨変形症の1つ で,そ の治療法 と して矯正的方法 と 口腔外科的方法,あ るいは両者を併用す る方法が ある。 外科的治療は,顔 貌 および咬合状態 の改善,下 顎全体 と しての機能回復な どを 目的 として行われ,そ の術式には 下顎枝両側を切断 し下顎骨体を後方へ移動 させ る方法, および両側下顎骨々体 の1部 を切除短縮す る方法 とに大 別される1)2).下顎枝切断術にはそ の切断部位に よって種 々の方法があ り,大 別す ると水平切断法3)4),斜 断法5)~8), 垂直切断法9),矢 状切断法10)~14),などが ある.水 平切断 法は古 くか ら行わ れて き た方法で,Kostecka3)が これ らを改良 し,Kostecka氏 法 として報告 してい る.そ の 後,わ が国では中村15)に...

The treatment of deep anterior crossbite is technically challenging due to the difficulty of placing traditional brackets with fixed appliances. This case report represents a none traditional treatment modality to treat deep anterior crossbite in an adult pseudo class III malocclusion complicated by severely retruded, supraerupted upper and lower incisors. Treatment was carried out in 2 phases....

BACKGROUND AND AIM: Consanguineous marriage is one of the causes of congenital deformities and genetic diseases. The aim of this study was to evaluate the role of consanguineous marriage in dentoalveolar deformities in 16-18 years old adolescents with parental consanguineous marriages in Kerman, Iran. METHODS: A total of 388 female and male adolescents participated in this study. The subjects w...

Pseudo Class III malocclusion is characterized by an anterior crossbite with functional forward mandibular displacement. Various appliances have been devised for early treatment of a pseudo Class III. The aim of this article is to highlight the method of construction and use a simple removable appliance termed as "Modified Hawleys appliance with inverted labial bow" to treat psuedo class III ma...