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Results for “Matrix Bands”

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At least 19 recordsLinked to original sources
PubMed2002

A survey of the use of matrix bands and their decontamination in general dental practice.

AIMS: The aims of this study were to determine the pattern of use and re-use of matrix bands in general practice in Scotland, to demonstrate which type of matrix band is most commonly used and to examine infection control measures of relevance to the safe use and re-use of matrix bands. MATERIALS AND METHODS SUBJECTS: 621 of Scotland's 1,849 general dental practitioners were randomly selected. DATA COLLECTION: A 19-item self-reported questionnaire was mailed in June 1999 with a follow-up mailing sent in August 1999. ANALYSIS: Data analysis involved descriptive statistics and cross-tabulation. Where appropriate, differences between categories were tested for significance by a Chi-square test. RESULTS: A total of 479 questionnaires were returned, representing a response rate of 77%. Reported compliance with routine glove wearing was high (91%). Most dentists (92%) provided training on instrument cleaning and sterilisation for their dental nurses. Ultrasonic baths were used by 59% of practitioners; the remainder soaked or manually scrubbed instruments to remove debris before autoclaving. The Siqveland matrix was the matrix of choice for 96% of respondents. 7% provided a new matrix band for each patient. Most (64%) changed bands only when they were bent or damaged; 29% changed them daily or weekly. Deterrents to use of a new band for each patient were cost (39%) and time (52%). A total of 54% of respondents considered matrix band replacement unnecessary between patients. CONCLUSIONS: The Siqveland matrix band is the most popular among the study group of dental practitioners. Re-use of matrix bands is common. Guidelines for the safe re-use of matrix bands are required.

Attitude of Health Personnel↗
PubMed2002

A study of blood contamination of Siqveland matrix bands.

UNLABELLED: AIMS To use a sensitive forensic test to measure blood contamination of used Siqveland matrix bands following routine cleaning and sterilisation procedures in general dental practice. MATERIALS AND METHODS: Sixteen general dental practices in the West of Scotland participated. Details of instrument cleaning procedures were recorded for each practice. A total of 133 Siqveland matrix bands were recovered following cleaning and sterilisation and were examined for residual blood contamination by the Kastle-Meyer test, a well-recognised forensic technique. RESULTS: Ultrasonic baths were used for the cleaning of 62 (47%) bands and retainers and the remainder (53%) were hand scrubbed prior to autoclaving. Overall, 21% of the matrix bands and 19% of the retainers gave a positive Kastle-Meyer test, indicative of residual blood contamination, following cleaning and sterilisation. In relation to cleaning method, 34% of hand-scrubbed bands and 32% of hand-scrubbed retainers were positive for residual blood by the Kastle-Meyer test compared with 6% and 3% respectively of ultrasonically cleaned bands and retainers (P < 0.001). CONCLUSIONS: If Siqveland matrix bands are re-processed in the assembled state, then adequate pre-sterilisation cleaning cannot be achieved reliably. Ultrasonic baths are significantly more effective than hand cleaning for these items of equipment.

Blood↗
PubMed1981

A matrix band technique for large amalgam cores.

The inability to adapt matrix bands successfully to badly broken down teeth has been a source of frustration to clinicians. Unfortunately, this has often led to therapy involving extractions of strategic posterior teeth because the dentist thinks that the time and effort entailed in restoring the tooth is not practical, or that an attempt to band a difficult tooth would prove futile. The banding technique described here was effective after proper enclosure, length, and gingival adaptation were accomplished, and the occlusal surface of the crown was removed; the technique can make a difficult procedure easier to accomplish.

Crowns↗
PubMed1996

A renumbering method to decrease matrix banding in equations describing branched neuron-like structures.

The solution to matrix equations which describe branched neuron-like structures can be made more efficient by minimizing matrix banding. This can be accomplished through the reordering of the compartmental numbering system. The renumbering method presented here extends upon the numbering method of Hines ((1984) Int. J. Biomed. Comput., 15: 69-76). A demonstration of efficient numbering will be presented for several general cases of branching structures. Theoretical computational savings can be estimated for the above structures. An algorithm to renumber a matrix already in Hines form will be described. Branched nerve equations, electrical networks and chemical reaction models are examples of systems which can benefit from this application.

Models, Neurological↗
PubMed1995

Copper band matrix for large Class V amalgam restorations.

Class V cavities present special problems in restoration and maintenance. The subsequent health of the gingival tissue and the relative immunity toward recurrent caries depends not only on the age of the patient and patient's oral hygiene but to a great extent on the excellence of the restoration. This excellence is achieved by the operator's detailed design of the preparation, moisture control, and restoration and material finishing. Dental amalgam continues to be the material of choice in many clinical situations. The restoration of a large class V lesion that results from replacement of a defective restoration or extensive caries benefits greatly when a copper band matrix is used because of its ability to be shaped and contoured and its rigidity. In large class V cavities, the copper band creates a "false" wall that is required for confinement of the amalgam as it must be packed under pressure. This confinement of the cavity is necessary because it restricts the amount of excess material which ultimately is important in the restoration of the tooth and its long-term success.

Copper↗
PubMed2002

Matrix band hygiene.

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Dentistry, Operative↗