The purpose of this investigation was to study the anatomy of the articular eminence of the temporomandibular joint. Direct angulation measurements of the lateral and midpoint inclined planes were made in 100 adult Asiatic Indian skulls using a headholder (craniophore) apparatus. The results showed that left and right side measurements did not differ significantly. The mean angulation of the midpoint inclined plane was significantly greater than that of the lateral inclined plane. The mean lateral inclined plane was 41.2 degrees +/- 10.7 degrees, with a range of 20 degrees-72 degrees; at the midpoint inclined plane, the mean was 54.2 degrees +/- 11.4 degrees, with a range of 17 degrees-77 degrees. Three morphologic articular eminence types were identified: (1) protuberant, (2) moderate, and (3) flat. These findings need to be considered when making clinical correlations.

Adult↗

PubMed1989

Temporomandibular joint motion: efficacy of fast low-angle shot MR imaging.

One hundred temporomandibular joints (TMJs) in 62 symptomatic patients and two healthy volunteers were prospectively examined with T1-weighted spin-echo and fast low-angle shot (FLASH) gradient-echo sequences. FLASH sequences were performed during opening of the mouth and provided a pseudodynamic depiction of TMJ motion. In 49 joints, FLASH sequences provided information that potentially influenced the therapeutic approach to the patient. This information was not available from standard T1-weighted images. The additional information fell into four general categories: (a) determination of the exact time of disk recapture, (b) distinction of normal variants from pathologically displaced disks, (c) clarification of discrepancies found between clinical examination results and T1-weighted images, and (d) elimination of motion degradation of images.

Adult↗

PubMed1988

The changing face of oral and maxillofacial surgery.

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Humans↗

PubMed1988

Prob. c abbrev. in med. rec.

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Abbreviations as Topic↗

PubMed1988

Collagen/hydroxylapatite implant for augmenting deficient alveolar ridges: twelve-month clinical data.

In a multicenter study, 77 edentulous patients had mandibular augmentation with implants of purified fibrillar collagen combined with dense hydroxylapatite (Alveoform Biograft); 22 of these patients also had maxillary augmentation. Most patients had Class III or IV mandibular atrophy, and had outpatient surgery with the subperiosteal tunneling technique. Temporary splints were worn for 24 hours post-surgery. Mean ridge height was 15.3 mm before surgery and 19.5 mm after 12 months, an augmentation of 4.2 mm. Predictable compaction occurred largely in the first few months after denture loading. Most patients, surgeons, and prosthodontists assessed the results of the procedure as good to excellent at 1 year following implantation. Adverse experiences, largely dehiscence and paresthesia, tended to resolve over time. Sera from ten patients demonstrated antibodies to bovine collagen that were not clinically significant. Alveolar augmentation with collagen/hydroxylapatite achieved clinically significant results that compared favorably with those achieved with other types of ceramic implants.

Adult↗

PubMed1988

Can we talk?

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Communication↗

PubMed1988

Accuracy of radiographs in classification of impacted third molar teeth.

The accuracy of using panoramic radiographs as the basis for classification of impacted third molars and subsequent fee reimbursement by third party carriers was evaluated. Radiographs showing 20 impacted third molar teeth were classified independently by 40 oral and maxillofacial surgeons, 10 general dentists, and 11 health insurance consultants. No group had an accuracy rate better than approximately 50%. These findings demonstrate the unreliability of radiographs for classification of impacted teeth, irrespective of the training or experience of the evaluator.

Humans↗