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Biomedical subjects

R M Lubow

Publications and source records attributed to R M Lubow.

At least 19 recordsLinked to original sources
PubMed1988

Effect of air-powder abrasive instrument on porcelain.

The effects of an air-powder abrasive instrument on porcelain were evaluated. Sample disks made from two commercial porcelains and three porcelain stains were treated for 30 seconds with this instrument. Although there was no visible change in the stain or glaze of the samples, scanning electron microscopy revealed severe pitting of all of the Vita porcelain/Vita stain samples, moderate pitting of all of the Vita porcelain/Ceramco stain samples, and no pitting or effects on Willceram porcelain/Crystar stain samples. It is recommended that the air-powder abrasive instrument be used cautiously or not at all on porcelain restorations, especially those with staining and/or specific characterizations. Pitting of the surface could be a result of this treatment.

Dental Porcelain↗
PubMed1987

Acyclovir and the treatment of herpetic whitlow.

The herpes simplex virus can cause both oral and cutaneous lesions. Herpetic whitlow is a cutaneous manifestation of a herpetic infection. The source of the infection for many medical and dental professionals is the oral cavity. Acyclovir, an antiviral agent used in the treatment of herpes simplex virus infections, was administered in the treatment of herpetic whitlow. Controlled studies of acyclovir therapy for herpetic whitlow have not been done; however, its use by health care providers to treat the symptoms of herpetic whitlow and a review of the disease are discussed in this case report.

Acyclovir↗
PubMed1987

Adenomatoid hyperplasia of mucous salivary glands. Report of two cases.

Adenomatoid hyperplasia of the mucous salivary glands is an uncommon benign tumor of the oral cavity. Two cases of palatal involvement are presented. Since clinical differentiation between benign and malignant growth of the palate cannot be established, microscopic examination is necessary. The palate is the most common location of this lesion, and as such it is useful for the periodontist to be aware of this tumor.

Adult↗
PubMed1987

Cyst of the incisive (palatine) papilla. Report of a case.

Cysts of the incisive papilla are uncommon variants of the nasopalatine duct cysts. They may be symptomatic or asymptomatic and usually are not seen radiographically. This case report presents a flat, darkly pigmented asymptomatic lesion which required differentiation from a possible malignant melanoma. Due to its location in the anterior palate, this lesion is of interest and clinical significance to the periodontist.

Adult↗
PubMed1986

The effect of an air-powder abrasive instrument on composite resin.

Three composite resins were subjected to applications of sodium bicarbonate with an air-powder abrasive instrument. Materials tested were a microfilled, a conventional, and a light-cured composite resin. Samples were tested for surface roughness before and during applications. The applications produced significant increases in roughness. It was concluded that the light-cured composite resin should be the material used for patients undergoing a recall maintenance program in which the instrument is used.

Acrylic Resins↗
PubMed1984

Endodontic flap design: analysis and recommendations for current usage.

An endodontic flap design, which may be used as an alternative to the presently described endodontic flaps, is presented. This flap involves a full-thickness dissection with easily recognizable landmarks and straight-line incisions. A beveled horizontal incision is designed to incorporate the maximum amount of facial keratinized tissue into the body of the flap, while leaving the interproximal tissues untouched. The resultant flap is easily replaced with interrupted sutures to the stable interproximal papillae. Healing is rapid, with excellent esthetic results.

Adult↗
PubMed1984

Formaldehyde emitted by chemical vapor sterilizers.

Formaldehyde has been identified as a potential occupational carcinogen and is a component of chemical solutions used in chemical vapor sterilizers. This study evaluated room air for formaldehyde in rooms where chemical vapor sterilizers were in use.

Air Pollutants↗
PubMed1984

Evaluation of a digital pulp tester.

An evaluation of a new-generation digital pulp tester revealed some significant advantages over the conventional, manually operated type. Its automatic operation and comfortable stimulation of the tooth could make this instrument a valuable addition to the dental armamentarium.

Data Display↗
PubMed1984

Plasma-cell gingivitis. Report of a case.

A well-documented case of plasma-cell gingivitis is presented. When viewed in a total perspective, the clinical examination, history of usage of a popular mint , laboratory data and histologic examination provide support for this diagnosis. This patient did not exhibit any evidence of glossitis or cheilitis as is often reported in the literature; however, a positive history to psoriasis was noted. The occurrence of plasma-cell gingivitis in a patient with documented psoriasis provides some interesting speculation regarding the etiologic picture of this condition.

Adult↗
PubMed1984

The effects of two sharpening methods on the strength of a periodontal scaling instrument.

Several different techniques exist for sharpening periodontal scalers each of which will yield a relatively sharp instrument; however, some techniques may decrease the strength of the instrument more rapidly than others. The purpose of this study was to evaluate the effect of two different sharpening techniques on the strength of a periodontal scaler. Sixty McCall No. 13-14 scalers (SCI-DENT) were divided into groups of ten. Each group was reduced in size from 0 to 50% of a standard original size in increments of 10% by reducing the face of the instrument using an RX Honing Machine. A second set of 60 scalers was treated in a similar fashion by reducing the lateral surfaces of the instrument. Original angles and blade clearances were maintained on all instruments. Strength was measured by applying a force at a positive rake angle of 15 degrees in an Instron Testing Machine with a head speed of 50 cm/min. There were no significant differences in strength from grinding on the face vs. the lateral surfaces of the scaler in contrast to the observations of other investigators. Moreover, a 10 to 20% reduction can be accomplished before a significant drop in strength is observed by sharpening either the side or face of the instrument.

Dental Prophylaxis↗