Education in maxillofacial prosthetics.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
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The maxillofacial prosthodontist has the dilemma of obtaining jaw relation records with structures that have been altered anatomically and/or physiologically. In the maxillae, problems associated with stability of the recording base require the prosthodontist to equalize pressure as best he can in obtaining jaw records. The maxillofacial prosthodontist is faced with the additional problem of altered mandibular movements. Five patients with lateral resections of the mandible were tested in a pilot study. These patients could not make protrusive or repeatable lateral movements. Anatomic correlations, especially the unilateral action of the mylohyoid muscle, may account for this pattern of abnormal mandibular movements. This study will continue.
A laboratory experiment was conducted to measure the amount of movement in each of two directions on each of seven teeth, induced by three common designs of retainer, under both splinted and unsplinted conditions. An analysis of variance on a four-way, completely crossed, fixed-effects model showed significant main effects for design, splintedness, and teeth involved. Also of significance were the interactions between the factors of splintedness and teeth and between design and splintedness. Most of the variability in tooth movement was due to differences among the seven teeth (49.3 per cent of variance) and to the interaction of splintedness and teeth (20.2 per cent of variance).
The common problems encountered during cranioplasty procedures have been reviewed and remedial procedures suggested. The problems or situations discussed include: implant selection and impressions, swelling and infection, integument thickness, distortion of plastic implants by autoclaving and seating guides, control of bleeding and swelling during operation, implant immobilization, eyebrow area involvement, dropping the implant, and inadequate skin flaps.
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