PubMed · 4536223
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S P Weber. 1974. [Implantation registration program].. https://pubmed.ncbi.nlm.nih.gov/4536223/
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The reliability of a paralleling instrument for dental radiographs was retrospectively evaluated in the course of a 6-month clinical study. The angular variation between successive exposures was precisely quantified. Ninety-one percent of the angular variations were below a 1.4 degree threshold, but some paired images were found unsuitable for quantitative analysis. A mathematic procedure to assess the global angular projection error of any similar coupled x-ray cone-film holder device is proposed. This mathematic procedure should be routinely used to check superimposability of serial radiographs before density quantification or subtraction.
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We have achieved functional reconstruction for a bilateral upper alveolar bone, gingival, and palatal defect that has various problems originating from instability of the prosthesis using the fibula osteocutaneous flap with osseointegrated implants. The flap had three bone segments and two skin paddles. The combined bone segments created the upper alveolar arch, and the skin paddles closed the palatal defect. Nine months later, prosthodontic treatment was performed successfully. Our procedure restored the patient to masticatory function of the upper jaw, intelligible speech, and natural facial appearance. As a result, quality of life of the patient was extremely improved.