The Experts below are selected from a list of 21 Experts worldwide ranked by ideXlab platform

栗原 三郎 - One of the best experts on this subject based on the ideXlab platform.

  • A case report of a skeletal class III
    松本歯科大学学会, 2007
    Co-Authors: 田中 弘子, 杉本 俊之, 臼井 暁昭, 栗原 三郎
    Abstract:

    An orthodontic case (female) with a skeletal mandibular protrusion is reported, using mandibular extra-oral anchorage. She showed Skeletal 3 (ANB+1.5°) with anterior cross bite at age 9y7m. The goal of orthodontic treatment in the first stage was correction of anterior cross bite and control ofmandibular growth, then the goal in the second stage was up-righting of the mandibular molar to correct dental occlusion. There was progressive improvement in the facial appearance and a stable occlusion was also obtained. The achievements were; 1) appropriate forward growth of the maxillary bone and downward growth of mandibular bone without mandibular plane opening, and 2) reasonable upper and lower incisor angle. These results might have been achieved by anterior cross bite correction and control of mandibular growth with a Chin Cap in the first stage and by mandibular molar up-righting to correct occlusion in the second stage

Yoshitaka Yasuda - One of the best experts on this subject based on the ideXlab platform.

  • facial asymmetry in subjects with skeletal class iii deformity
    Angle Orthodontist, 2009
    Co-Authors: Seiji Haraguchi, Kenji Takada, Yoshitaka Yasuda
    Abstract:

    We investigated the frequency, site, amount, and direction of facial asymmetry in human adults with mandibular prognathism and examined if these characteristics were associated postnatally with cardinal clinical signs that may indicate a predisposition to facial asymmetry. Two hundred twenty young Japanese adults (69 men and 151 women) who exhibited skeletal Class III malocclusions were selected. The sample was divided into a Postnatal Factor Group and a Nonpostnatal Factor Group. The former group included those who had: (1) received orthodontic treatment using a Chin Cap; (2) exhibited clinical symptoms of temporomandibular joint (TMJ) disorder; (3) reported a history of maxillofacial trauma; or (4) radiographic abnormality of the condyles. Subjects with a deviation of more than 2 mm from the facial midline associated with any of the 4 landmarks (ANS, U1, L1 and Me) were classified as asymmetric and the asymmetry was measured on a postero-anterior (P-A) cephalogram. Radiographic facial asymmetry was found frequently (70%-85%, for Menton), and most obviously in the lower jaw (P < .05). Lateral displacement toward the left side of the face occurred more often than right-sided deviation (P < .001, for Menton). However, the Postnatal Factor Group showed a higher proportion of subjects with lateral deviation toward the right side (P = .0031) and a greater amount (P < .0001) of Chin deviation. This was due to the fact that the subjects having TMJ problems as a postnatal factor showed no directional uniqueness in jaw deviation and exhibited a longer distance of deviation.

田中 弘子 - One of the best experts on this subject based on the ideXlab platform.

  • A case report of a skeletal class III
    松本歯科大学学会, 2007
    Co-Authors: 田中 弘子, 杉本 俊之, 臼井 暁昭, 栗原 三郎
    Abstract:

    An orthodontic case (female) with a skeletal mandibular protrusion is reported, using mandibular extra-oral anchorage. She showed Skeletal 3 (ANB+1.5°) with anterior cross bite at age 9y7m. The goal of orthodontic treatment in the first stage was correction of anterior cross bite and control ofmandibular growth, then the goal in the second stage was up-righting of the mandibular molar to correct dental occlusion. There was progressive improvement in the facial appearance and a stable occlusion was also obtained. The achievements were; 1) appropriate forward growth of the maxillary bone and downward growth of mandibular bone without mandibular plane opening, and 2) reasonable upper and lower incisor angle. These results might have been achieved by anterior cross bite correction and control of mandibular growth with a Chin Cap in the first stage and by mandibular molar up-righting to correct occlusion in the second stage

Seiji Haraguchi - One of the best experts on this subject based on the ideXlab platform.

  • facial asymmetry in subjects with skeletal class iii deformity
    Angle Orthodontist, 2009
    Co-Authors: Seiji Haraguchi, Kenji Takada, Yoshitaka Yasuda
    Abstract:

    We investigated the frequency, site, amount, and direction of facial asymmetry in human adults with mandibular prognathism and examined if these characteristics were associated postnatally with cardinal clinical signs that may indicate a predisposition to facial asymmetry. Two hundred twenty young Japanese adults (69 men and 151 women) who exhibited skeletal Class III malocclusions were selected. The sample was divided into a Postnatal Factor Group and a Nonpostnatal Factor Group. The former group included those who had: (1) received orthodontic treatment using a Chin Cap; (2) exhibited clinical symptoms of temporomandibular joint (TMJ) disorder; (3) reported a history of maxillofacial trauma; or (4) radiographic abnormality of the condyles. Subjects with a deviation of more than 2 mm from the facial midline associated with any of the 4 landmarks (ANS, U1, L1 and Me) were classified as asymmetric and the asymmetry was measured on a postero-anterior (P-A) cephalogram. Radiographic facial asymmetry was found frequently (70%-85%, for Menton), and most obviously in the lower jaw (P < .05). Lateral displacement toward the left side of the face occurred more often than right-sided deviation (P < .001, for Menton). However, the Postnatal Factor Group showed a higher proportion of subjects with lateral deviation toward the right side (P = .0031) and a greater amount (P < .0001) of Chin deviation. This was due to the fact that the subjects having TMJ problems as a postnatal factor showed no directional uniqueness in jaw deviation and exhibited a longer distance of deviation.

臼井 暁昭 - One of the best experts on this subject based on the ideXlab platform.

  • A case report of a skeletal class III
    松本歯科大学学会, 2007
    Co-Authors: 田中 弘子, 杉本 俊之, 臼井 暁昭, 栗原 三郎
    Abstract:

    An orthodontic case (female) with a skeletal mandibular protrusion is reported, using mandibular extra-oral anchorage. She showed Skeletal 3 (ANB+1.5°) with anterior cross bite at age 9y7m. The goal of orthodontic treatment in the first stage was correction of anterior cross bite and control ofmandibular growth, then the goal in the second stage was up-righting of the mandibular molar to correct dental occlusion. There was progressive improvement in the facial appearance and a stable occlusion was also obtained. The achievements were; 1) appropriate forward growth of the maxillary bone and downward growth of mandibular bone without mandibular plane opening, and 2) reasonable upper and lower incisor angle. These results might have been achieved by anterior cross bite correction and control of mandibular growth with a Chin Cap in the first stage and by mandibular molar up-righting to correct occlusion in the second stage