Health Sciences University of Hokkaido Academic Repository / 北海道医療大学学術リポジトリ
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Angle II, skeletal Class I crowding case with palatally displaced maxillary first premolars
Get PDFThis report describes the orthodontic treatment of a 18−year−old girl, with skeletal ClassⅠmalocclusion and severe crowding. The treatment goal was to obtain individual normal occlusion by improve the crowding. The orthodontic treatment was performed extraction of 4 first pre−molars and multi−bracket appliances. The correct occlusion and profile were achieved after the treatment.departmental bulletin pape
A case of skeletal Class II with the significant protruded position of the maxillary central incisor treated with consideration of bone housing
Get PDFReduced periodontal support is a challenge that clinicians often face during orthodontic clinical practice. Because of the close and complex relationship between periodontal tissues and in orthodontic tooth movement, it is important to devise tooth movement mechanics and select appropriate orthodontic appliances in orthodontic treatment to overcome these challenges. On the other hand, excessive tooth movement beyond bone housing is believed to promote destruction of periodontal tissues. Specifically, there is a risk of gingival recession, root resorption, and even alveolar bone resorption being induced during, immediately after, or several years after treatment. Especially in cases of skeletal Class II, it is common for tooth movement to significantly palatal retraction of the maxillary anterior teeth to improve the labial tipping and the protruded position of the maxillary anterior teeth. Therefore, care must be taken when planning orthodontic treatment. In the present case, in a skeletal Class II case with the significant protruded position of the maxillary anterior teeth, considering bone housing, orthodontic treatment was performed mainly by palatal tipping movement of the maxillary anterior teeth and non−extraction of the mandible by distalization of the lower molars using orthodontic temporary anchorage devices. The results of the orthodontic treatment are reported.departmental bulletin pape
A Case of probable Oral Floor Vein Malformation with Multiple Phleboliths
Get PDFApproximately half of venous malformation are said to occur in the head and neck region, and calcification may be observed. We experienced a case of venous malformation that resembled submandibular sialolithiasis and had difficulty in differential diagnosis. In accordance with this, I will add a review of the literature and report the results. A 21−year−old female presented with intermittent pain and swelling in the left submandibular region in May 2018. One month ago the patient had colicky pain after every meal. Extraoral examination revealed an elastic soft mass with well−demarcated borders in the left submandibular region. On oral examination, swelling was observed on the left side of the floor of the mouth, and the mucosa of the floor of the mouth was dark red, and a bimanual palpation from inside and outside the mouth revealed that it was elastic, soft, and movable, with no induration, but was slightly painful. The original clinical diagnosis was submandibular gland sialolithiasis. We were monitoring her symptoms and one year later, in May 2019, when she visited the hospital, CT scans confirmed calcification−like images of various sizes, and since she entered a university in another prefecture, her progress was monitored every time she returned home. In August 2022, her symptoms recurred and she was referred to the Department of Otorhinolaryngolog in a General Hospital. As a result of an MRI and other tests, she was diagnosed with a venous malformation and scheduled for endovascular treatment.departmental bulletin pape
Effects of mechanical load and estrogen in cultured cells from superficial layer of mandibular condyle
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