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Papers by Kenneth Kent DMD

Archives of Otolaryngology–Head & Neck Surgery, 2006

ABSTRACT Eccrine porocarcinoma is a rare malignancy that is derived from the eccrine sweat gland.... more ABSTRACT Eccrine porocarcinoma is a rare malignancy that is derived from the eccrine sweat gland.1 The paucity of information about this entity in the literature creates a challenge in both diagnosis and treatment. We present a case report and review the world literature regarding eccrine porocarcinoma in an effort to summarize the international experience with this lesion and to help guide future management.

American Journal of Otolaryngology, 2000

Purpose: To assess the morbidity of mandibulotomy in patients treated for neoplasms of the oropha... more Purpose: To assess the morbidity of mandibulotomy in patients treated for neoplasms of the oropharynx and oral cavity, and to determine if postoperative radiation therapy to the mandibulotomy site carries an increased risk of complications. Patients and Methods: The medical charts of 30 patients treated between 1992 and 1996 undergoing midline mandibulotomy for tumors of the oral cavity (7 patients) and oropharynx (23 patients) were retrospectively reviewed. Three patients presented with recurrent disease, 1 of whom was previously irradiated. Twenty-five patients received postoperative radiation after mandibulotomy to a median dose of 60 Gy to the primary tumor bed, whereas 5 patients were treated with surgery alone. The patients were separated into those whose mandibulotomy site was within the radiation treatment field (n ϭ 9), and those whose site was shielded (n ϭ 10). Median follow-up was 27.8 months (range 5-81 months). End points included significant pain involving the mandibulotomy site, trismus, malocclusion, wound infection, osteoradionecrosis, and time to oral intake. Results: There were no postoperative deaths. Minor wound infection or breakdown occurred in 4/30 patients (13%). All of these resolved with local care and parenteral antibiotics. More serious complications involving the mandibulotomy occurred in 2 patients (7%). One patient had chronic wound drainage at the mandibular osteotomy site, which healed after plate removal. Another patient developed osteoradionecrosis. No patient developed trismus or malocclusion. With a median follow-up of 27.8 months, 4 patients have recurred locally. The complication rate was 11% for patients whose mandibulotomy site was irradiated, and 30% for those whose site was shielded. Conclusion: Mandibulotomy can be safely performed in patients who are likely to require postoperative external radiation.

Oral Surgery, Oral Medicine, Oral Pathology, 1989

The Journal of Prosthetic Dentistry, 1983

S ilicone rubber, or polydimethylsiloxane, is used commonly as a component of resilient intraoral... more S ilicone rubber, or polydimethylsiloxane, is used commonly as a component of resilient intraoral, extraoral, and implant prostheses. Porosity and density of these silicone polymers are a major concern to the clinician. A porous prosthetic material may absorb tissue fluids and saliva, provide a pathway for microbial invasion, and contribute to surface irregularity. Therefore, the fabrication of a nonporous and dense prosthetic material will be better suited to intraoral and extraoral use. Intraoral prostheses should have a maximum density with minimal or no porosity to minimize matrices for bacterial colonization. Extraoral prostheses should have maximum density with controlled irregularity of selected surfaces to aid in the mechanical bonding of skin adhesives. On the other hand, the placement of pores in an implant prosthesis has been suggested. I, * Controlled porosity in implants allows for fluid transfer, helps to control hematoma formation during the early postoperative period, and allows for the proliferation of connective tissue, which stabilizes the position of the prosthesis after healing has occurred.' This article will discuss methods for controlling the porosity and density of these materials so that their texture will be more applicable to their intended use. CHEMISTRY OF SILICONE POLYMERS Silicone rubber polymers are classified as (1) polydimethylsiloxanes, (2) methylvinyl/dimethylsiloxanes,

Journal of Oral and Maxillofacial Surgery, 1984

Lateral and vertical excess of the tuberosity cancompromise fabrication and function of the maxil... more Lateral and vertical excess of the tuberosity cancompromise fabrication and function of the maxillary denture. Techniques for reduction of hyperplastic mucosa and bone are well-documented and routine in the practice of oral and maxillofacial surgery. Conventional alveoloplasty, however, is inadequate when hypertrophy of the tuberosity is accompanied by extensive pneumatization of the maxillary sinus (Fig. 1). Standard reduction procedures may lead to sinus exposure, loss of continuity of the bony antral wall, and perforation. Oro-antral fistulae. unsupported alveolar tissues, prolonged healing, and irregular tuberosity contours can result. Adaptation of the Kufner posterior intrusion osteotomy' has been described for use in cases of vertically excessive, pneumatized tuberosities.Z,3 This technique requires a second operation to correct excessively thick soft tissue on the crest of the ridge or to recontour areas of bony undercut on the tuberosity. The modified Kufner procedure also involves prolonged healing time. delaying denture fabrication. This report describes a procedure designed to permit reduction of vertical and lateral excesses in the pneumatized tuberosity and revision of mobile soft tissue overlying the alveolar crest at the same time. The technique has yielded excellent results in patients for whom conventional tuberosity reduction was not possible. Technique A full-thickness mucosal incision is made extending from the posterior aspect of the tuberosity '* Private practice. Oral and Maxillofacial Surgery, Vancouver.