Gerson Cohen

Bio: Gerson Cohen is an academic researcher from New York University. The author has contributed to research in topics: Pulp (tooth) & Thermogenesis. The author has an hindex of 5, co-authored 8 publications receiving 1152 citations.

Ultrasonic cavijty preparation: histopathologic survey of effects on mature and developing dental tissues

Abstract: The histopathologic effects of ultrasonic cavity preparation in permanent teeth (human) and in permanent, deciduous and underlying permanent teeth of primates were studied. The response in the pulp was mild and generally indicated a reversible reaction, in all aspects comparable to the response caused by rotary technics. No evidence was found of any pathologic condition in the supporting structures nor was aberration ar dysplasia seen in growing structures or tissues. Pulp response to the cutting of dentin cannot be distinguished according to the instrument which does the cutting.

Germ-Tube Formation by Candida albicans

Abstract: Germ-tube formation by Candida albicans has been reported as a significant factor in pathogenicity. Wide variation has been seen in the formation of germ tubes in saliva specimens obtained from both healthy and systemically ill individuals. However, germ tubes were found more frequently and in higher numbers in the saliva of diseased individuals.

Experimental radio‐osteonecrosis in Rhesus macaque jaws; therapeutic irradiation dose effect on dental extraction wound healing

Abstract: Varying degrees of osteonecrosis result from molar extractions or other oral surgical procedures in rhesus macaques before, during, or after the administration of 6000 rad (the equivalent of human therapeutic dose levels) via either 240 kVp x-ray or cobalt 60 irradiation to the jaw areas subjected to surgery. The effects of various experimental time-dose-wound combinations on the level of impairment of wound-healing, interruption of osteogenesis, and the nature of the response of the irradiation-compromised tissues are covered in this report.

Lasers in dentistry.

Abstract: Since the development of the ruby laser by Maiman in 1960, there has been great interest among dental practitioners, scientists, and patients to use this tool to make dental treatment more pleasant. Oral soft tissue uses are becoming more common in dental offices. The possible multiple uses of lasers in dentistry, beyond soft tissue surgery and dental composite curing, unfortunately, have not yet been realized clinically. These include replacement of the dental drill with a laser, laser dental decay prevention, and laser decay detection. The essential question is whether a laser can provide equal or improved treatment over conventional care. Safe use of lasers also must be the underlying goal of proposed or future laser therapy. With the availability and future development of different laser wavelengths and methods of pulsing, much interest is developing in this growing field. This article reviews the role of lasers in dentistry since the early 1960s, summarizes some research reports from the last few years, and proposes what the authors feel the future may hold for lasers in dentistry.

History, safety, and effectiveness of current bleaching techniques and applications of the nightguard vital bleaching technique.

Abstract: This article reviews the literature on the use of hydrogen peroxide in three professionally administered bleaching techniques from historical, technique, and safety viewpoints. Safety over time, absolute safety, and relative safety of nonvital bleaching, in-office vital bleaching, nightguard vital bleaching, and over-the-counter bleaching kits are compared. The advantages and disadvantages of different bleaching options, as well as indications for individual or combined use of the techniques, are discussed. In addition, specific indications for the use of the nightguard vital bleaching technique are presented.