Journal of Dentistry, 8, No. 3, 1980, pp. 281-282 Printed in Great Britain

JOURNAL OF DENTISTRY

Abstracts from this issue

BROWN D. fed.) Dental materials: 1978 literature review Part 1, J. Dent. 8 (1980) 189-221. This paper, which is presented in two parts, reviews the work on dental materials pub- lished in 1978. Included in Part I are sections on cements, amalgam, composite filling materials, endodontic materials and fissure sealants.

BROWN 0. led.) Dental materials: 1978 literature review Part 11, J. Dent 8 (1980) 222-248. This paper is the second part of the review of the work on dental materials published in 1978. A review of the literature relating to biomechanics, impression materials, model, die and mould materials, waxes, cast and wrought alloys, acrylic resins, tissue con- ditioners and soft lining materials, ceramics, implants and corrosion is presented in Part II.

KELLETT M. and HOLBROOK W. P. Bacterial contamination of dental hand- pieces, .I. Dent 8 (1980) 249-253. Clean, dry dental handpieces harbour few bacteria, but contamination of the hand- piece lumen with salivary bacteria readily occurs in use. Wiping the outside of the handpiece with disinfectant does not eliminate the potential cross-infection risk. Water issuing from dental units is heavily infested with bacteria, some of oral origin, which presumably colonize the water piping of the units. Attempts to reduce this contamination with hydrogen peroxide were only partially successful.

SIDHU S. S., PARKASH H. and DHANANI N. Benign osteoblastoma of the mandible, J. Dent. 8 (1980) 254-256. A rarecase of benign osteoblastoma involving the mandible is presented. This neoplasm can easily be confused with other benign or malignant lesions of the jaws. The differen- tial diagnosis can ba made only by histo- pathologic examination. The lesion usually does not recur after complete excision.

LUI J. L. Bilateral 180° rotation of maxillary second premolars: a case report, J. Dent. 8 (1980) 257-259. A c,ase of bilateral tooth rotation through 180 involving the maxillary second pre- molars in a 30-year-old male patient is presented.

LOWNIE J. F. and REAM. A. Splinting a traumatically avulsed tooth, J. Dent. 8 f 1980) 260-262. A method of immobilization of the trauma- tically avulsed tooth using an arch bar and brass ligature wire is described. The type of splint used is quick and easy to fabricate and apply, requiring no complicated equip- ment or laboratory assistance. It is strong enough to support the tooth adequately for the required period of time, yet will allow access to the tooth for the performance of root canal therapy.

WILSON A. D., MERSON S. A. and PROSSER H. J. A sensitive conductimetric method for measuring the material initially water- leached from dental cements, J. Dent. 8 (198OJ 263-269. A conductimetric method is described for determining the initial amount of material leached from young cements. This new method correlates well with the traditional gravimetric method and is very much more sensitive. The contents of a single capsule fc. 0.1 ml) suffice for a determination.

GAZIT E., EINI R. and HIRSH N. The use of replacement wax carving tech- nique in teaching dental morphology, J. Dent. 8 (1980) 270-274. A description of a simple replacement wax carving method for the teaching of dental morphology is presented. It has the potential of diverse usage as a laboratory exercise in other disciplines in dentistry. The simple, clear and fast methodology is extremely time-saving and is very well accepted by the dental student. Following this technique, which concentrates on tooth morphology