Annual review of selected dental literature: report of the Committee on Scientific Investigation of the American Academy of Restorative Dentistry

The anchorage of Brånemark and ITI implants of different lengths. I. An experimental study in the canine mandible

The anchorage of machined Brånemark and ITI TPS-coated implants of various lengths was investigated in an animal model. Brånemark fixtures 7 and 10 mm long and ITI implants 6 and 10 mm long were inserted in the mandible of dogs and were reverse-torqued after 3 months of healing. The failing mode was different for the two implant systems. For the ITI implants, loosening coincided with the peak reverse-torque values. For the Brånemark fixtures, two reverse-torque values were identified and recorded, a 'start to rotate' and a peak value. The 'start to rotate' values for the 7 and 10 mm Brånemark fixtures were 36.67 and 38.57 Ncm, respectively, the peak values were 61.88 and 69.13 Ncm. The increase in implant length from 7 to 10 mm did not significantly improve the anchorage. The mean reverse-torque values for the 6- and 10-mm ITI implants were 104.66 and 192.25 Ncm, respectively; the difference was statistically significant. The mean removal torque of the 6-mm ITI implant was higher than the 7- and 10-mm Brånemark implants. It is suggested that the distinct anchorage magnitude and the distinct loosening patterns registered for both implant systems might be related to the various surface states. The latter might account for the different failure tendencies mentioned in the literature for short Brånemark and ITI implants.

Dental materials citations: Part A, January to June 1997

OBJECTIVE

A search was conducted in biomedical journals published from January 1997 to June 1997 to identify all dental materials publications and sort them into major categories.

METHODS

Tables of contents for 79 journals for the period of January to June, 1997 were inspected and divided into 17 categories. Citations were analyzed by both frequency in journals and in categories, as well as compared to frequencies for previous years.

RESULTS

A total of 445 citations were detected in 79 journals for the period January 1997 to June 1997. Certain journals (n = 19) demonstrated a higher citation frequency (> or = 10 citations for 6 months) and represented 77.8% of all citations. The greatest number of citations continued to involve bonding (n = 97), resin-based restorative materials (composites; glass ionomers) (n = 95), prosthodontic materials (n = 51), and pulp protection/luting materials (n = 48). Frequencies by category were very similar to those for the last four years.

SIGNIFICANCE

The compiled literature citations provide a supplement for researchers and academicians seeking information in existing electronic databases.

An update on fixed prosthodontics

The practice of fixed prosthodontics has continually evolved as a result of progress in laboratory and biomaterials science, clinical technologies and adjunctive multidisciplinary treatment advancements. This brief review describes those enhancements and how they affect the state-of-the-art practice of fixed prosthodontics.

Dental materials citations: Part B, July to December 1996

OBJECTIVE

A search was conducted in biomedical journals from July 1996 to December 1996 to identify dental materials publications and sort them into major categories. They were compared by frequency in different journals and in different categories during recent years.

METHODS

Tables of contents for 16 primary and 51 secondary journals were inspected from July to December of 1996 and were divided into 17 categories. The frequencies of citations for primary journals and for different citation categories were examined over a four-year period from 1993 to 1996.

RESULTS

There were 334 total citations from July to December 1996. The greatest number of citations continued to involve bonding (n = 159) and resin-based (composites; glass ionomers) restorative materials (n = 158). The numbers of articles by journal and by category were very similar over the last four years. The average number of articles per year was 531 +/- 15.

SIGNIFICANCE

The literature citations compiled in this list provide a supplement for researchers and academicians to the current electronic databases.

Review of dental materials citations: Part B, July to December 1995

OBJECTIVE

A lag of many months occurs between journal issue publication and updates to electronic databases. The objective of this literature analysis was to identify and categorize all of the dental materials citations in biomedical journals that were published from July 1995 through December 1995.

METHODS

Seventeen primary and 51 secondary journals were searched using their tables of contents to detect and record dental materials publications from July to December of 1995. Those journals that were typically rich in dental materials articles were classified as primary ones. Citations were categorized into 17 topics and divided into subsections. The review excluded case reports, most literature related primarily to dental implants, and most articles on biomedical materials used outside of the field of general dentistry.

RESULTS

The greatest number of citations was related to topics of dentin bonding and resin-based restorative filling materials (composites and glass ionomers). There was no major change in the number of dental materials publications per year reported from 1993 (n = 786) to 1995 (n = 751).

SIGNIFICANCE

This citation list provides a comprehensive resource for use by academicians and researchers to bridge the gap between initial publication and access to electronic searching methods for major databases.

Review of dental materials citations: Part A, January to June 1995

OBJECTIVE

Electronic databases are an excellent resource for identifying relevant references for research and education projects. However, these databases are not yet a substitute for direct inspection of the literature because: (a) there still is a lag of many months between journal issue publication and updates of the database, and (b) most databases selectively report a portion of the entire literature. The objective was to identify and categorize all the dental materials citations in biomedical journals that were published from January 1995 through June 1995.

METHODS

Seventeen primary and 56 secondary dental journals were manually searched via their tables of contents to detect dental materials publications from January to June of 1995. Dental materials citations were categorized into 17 major sections and further divided into several subsections. The review excluded case reports and literature primarily related to dental implants or biomedical materials outside of dentistry.

RESULTS

Three hundred-sixty-nine citations were identified. The greatest number of citations were associated with dentin bonding, composites, and glass ionomers. There was no significant increase in dental materials publications vs. the number reported for 1994.

SIGNIFICANCE

This list provides a comprehensive source for review by academicians and researchers to bridge the gap between initial publication and electronic citation.