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Biomedical subjects

J W Curtis

Publications and source records attributed to J W Curtis.

At least 19 recordsLinked to original sources
PubMed1998

Ultraconservative and cariostatic sealed restorations: results at year 10.

Changes in restorative techniques and the development of newer restorative materials have allowed for the use of more conservative cavity preparations. This 10-year study evaluated bonded and sealed composite restorations placed directly over frank cavitated lesions extending into dentin vs. sealed conservative amalgam restorations and conventional unsealed amalgam restorations. The results indicate that both types of sealed restorations exhibited superior clinical performance and longevity compared with unsealed amalgam restorations. Also, the bonded and sealed composite restorations placed over the frank cavitated lesions arrested the clinical progress of these lesions for 10 years.

Adolescent↗
PubMed1997

Motivational factors in the choice of postdoctoral general dentistry programs.

This study explored the importance of various personal and professional factors that may influence choices concerning postdoctoral training in general dentistry. We sent an eighty-one-question survey to all individuals (N = 1,995) who were registered to participate in the Postdoctoral Dental Matching Program (MATCH) and analyzed 599 returned surveys from those applying to GPR and/or AEGD programs. Approximately twenty questions addressed each of four time periods in the application process. Over half of respondents felt that learning more medicine, increasing their speed with dental procedures, gaining confidence in clinical skills, and treating compromised patients were very important. Over one-third of respondents felt that program location, salary and benefits, program philosophy and faculty, and nondental training experiences were very important. Females felt that thirty-five items were more important than did their male counterparts, whereas males indicated that two items were more important. While there were some differences between applicants to AEGD versus GPR programs, there were far more areas where the applicants to each of these programs shared common concerns. The data suggest that the majority of individuals who consider postgraduate general dentistry programs perceive a lack of experience at the predoctoral level relating to clinical dentistry in general and specifically to their understanding of medical principles and managing compromised patients.

Adult↗
PubMed1996

Assessing the effects of 10 percent carbamide peroxide on oral soft tissues.

To examine the effects of a 10 percent carbamide peroxide bleaching gel on the oral soft tissues, the authors conducted a prospective, double-blind, placebo-controlled clinical investigation. Fifty-two patients completed a two-week treatment regimen, applying either a placebo or a 10 percent carbamide peroxide gel in a soft tray for eight hours a day. Clinicians examined the participants' oral soft tissues at baseline and one week, two weeks and six weeks after the first treatment. The examiners recorded the Silness and Löe plaque and gingival indexes, nonmarginal gingival index and nongingival oral mucosal index at each examination. The data collected at these intervals did not indicate that any soft tissue damage had occurred as a result of the bleaching regimen.

Adult↗
PubMed1995

Clinical guidelines for photocuring restorative resins.

Success in using light-cured resin composites relies heavily on proper curing time and intensity. Because these factors are so critical, the authors reviewed the literature to arrive at guidelines for optimal curing conditions. The guidelines emphasize maintenance of the curing lights, consideration of the type of restorative material used and duration of exposure.

Absorption↗
PubMed1994

An apparent unusual relationship between rampant caries and the oral mucosal manifestations of chronic graft-versus-host disease.

Oral complications of chronic graft-versus-host disease are well known and may be present in up to 80% of persons with the condition. A case involving a 29-year-old woman with chronic graft-versus-host disease after allogeneic bone marrow transplantation is presented to illustrate how oral mucosal lesions may be adversely affected by severe caries. A variety of extensive mucosal lesions were continually irritated by the sharp edges of the carious teeth. Full-mouth extractions facilitated the complete resolution of the oral lesions. The patient has had no recurrence of oral lesions 4 years after the extractions and has shown no adverse mucosal changes 3 1/2 years after rehabilitation with complete dentures.

Adult↗
PubMed1993

Factors affecting cure at depths within light-activated resin composites.

When confronted with all the variables that are influential in maximizing the cure in light-activated resin composites, a practitioner may require information that ranks the relative importance of these parameters, so that clinical time can be best utilized. The purpose of this study was to determine simultaneously the relative impact of filler type (hybrid or microfill), composite shade (universal or gray), exposure duration (20, 40, 60 and 80 seconds) and source intensity (800, 578, 400 and 233 mW/cm2) on the extent of cure in light-activated composite at selected depths (top surface, 1, 2, and 3 mm) of a simulated restoration. Thin wafers of composite (P-50 and Silux Plus) were made between a cured composite underlay and varying thicknesses of cured overlay to obtain a wafer that reproduced the curing environment within a cylinder of composite. The monomer conversion of each specimen was obtained by infrared spectroscopic techniques. Analysis of variance was used to determine the significance of factors contributing to the cure of composite at each thickness of overlay used. At the surface, filler type, exposure duration and resin shade predominated as the most influential factors respectively. At 1 mm depth, the order of influential factors were exposure duration, filler type and source intensity. At depths of 2 mm and more, the overwhelming influences on cure were related solely to source intensity and exposure duration. Resin shade and filler type exerted minimal influence at these depths.

Analysis of Variance↗
PubMed1986

Periapical abscesses of cut canine teeth in cynomolgus macaques.

Periapical abscesses of canine teeth in a group of 47 male cynomolgus macaques are found to be associated with a procedure, involving cutting the canine teeth, used to make non-human primates less hazardous. Examination of 150 canine teeth in dry specimens revealed 30 cut teeth with no exposure of the pulpal chamber and 107 cut teeth where the dental pulp had been exposed. Of those teeth which had the pulpal chamber exposed by the cutting procedure, 85 (79.4%) showed clear evidence of osseous changes consistent with abscess formation in the apical regions.

Animals↗
PubMed1985

The incidence and severity of complications and pain following periodontal surgery.

This study examines the incidence and severity of postoperative complications and pain in 304 consecutive periodontal surgical cases. Comparisons were made between plastic soft tissue surgery, osseous surgery and pure mucogingival procedures. Multivariable analysis was used to ascertain significant associations of numerous factors to complications and pain. Postoperative complications were rated as moderate or severe in only 5.5% of the cases. Although the total postoperative complications were minimal, regression analysis revealed osseous surgery to be three times more likely than pure mucogingival surgery to cause complications of bleeding, infection, swelling or adverse tissue changes. Minimal or no postoperative pain was reported by 51.3% of the patients. Pure mucogingival surgery was significantly related to pain and was 3.5 times more likely to cause pain than osseous surgery and 6 times more likely than plastic soft tissue surgery. The duration of surgery was statistically significant for both complications and pain. The overall results of the study indicate the risks of undergoing periodontal surgery, in terms of postoperative complications and pain, are minimal.

Adolescent↗
PubMed1985

Dentistry in medical education: results of a comprehensive survey.

A survey of all U.S. and Canadian medical schools was undertaken to assess the current extent and nature of instruction in dental topics for medical students. The perceived importance of including such instruction in the undergraduate medical curriculum was ascertained, and barriers to teaching dental topics to medical students were identified.

Canada↗
PubMed1984

Appliance to protect maxillary teeth and palate during endoscopy.

To avoid traumatizing maxillary teeth and edentulous ridges during endoscopy, a device or appliance must be used to prevent direct contact of the teeth and mucosa with endoscopic instruments. Because previous appliances have been minimally protective, easily dislodged, or obstructive to the endoscopist, none have been widely accepted at our Institution. Consequently, we developed an easily fabricated protective appliance, using conventional dental technology, that has adequate strength to prevent fracture and displacement of teeth during routine endoscopy. The appliance is retentive, unobstructive, reusable, and reasonably priced for the patient. In an initial group of approximately 25 patients undergoing endoscopy, this appliance was well accepted by the otolaryngology and anesthesia staff, and there were no injuries to the teeth or oral mucosa. To verify further the usefulness of this type of appliance, a prospective study is planned.

Endoscopes↗
PubMed1983

Acute care of severe tooth fractures.

Teeth that are severely fractured and demonstrate vital tissue at the fracture line may be treated acutely by extirpating the pulp. This technique leaves the patient free of pain until secondary care is available.

Anesthesia, Dental↗