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Biomedical subjects

M E McLean

Publications and source records attributed to M E McLean.

6 recordsLinked to original sources
PubMed2001

Minimally invasive operative care. II. Contemporary techniques and materials: an overview.

SUMMARY: Restorative dentistry has experienced a shift from the mainly reparative dentistry of the 20th century towards a minimal intervention approach. Contemporary operative treatment incorporates the MI philosophy in cavity design. Currently available techniques to pursue minimally invasive restorative treatments are highlighted. Characteristics of adhesive materials that facilitate minimally invasive operative care are discussed. CONCLUSION: When operative intervention is the designated treatment for initial caries, currently available operative techniques and contemporary materials warrant a minimally invasive approach. Minimal intervention applied to the operative field keeps the options open for long-term preservation of the restored tooth.

Biocompatible Materials↗
PubMed2001

Minimally invasive operative care. I. Minimal intervention and concepts for minimally invasive cavity preparations.

SUMMARY: From the mainly reparative dentistry of the 20th century, contemporary dentistry shifts towards a minimal intervention (MI) approach encompassing up-to-date caries diagnosis and risk assessment before arriving at a treatment decision. An overview is provided of incorporating MI philosophy into the field of operative dentistry. The ultimate goal of MI is to extend the lifetime of restored teeth with as little intervention as possible. When operative care is indicated, it should be aimed at "prevention of extension." Black's principles for cavity design are considered and put in the perspective of minimally invasive operative care. Guiding principles for contemporary adhesive cavities are reviewed. CONCLUSION: Contemporary operative care should be based on a minimally invasive approach. Minimal intervention is not just a technique, it is a philosophy!

Dental Bonding↗
PubMed1992

Duration of anesthesia using the periodontal ligament injection: a comparison of bupivacaine to lidocaine.

The purpose of this study was to compare the duration of pulpal anesthesia obtained with 0.5% bupivacaine HCl with 1:200,000 epinephrine to 2% lidocaine HCl with 1:100,000 epinephrine, using the periodontal ligament (PDL) injection. Twenty-four subjects received bilateral PDL injections using mandibular premolar teeth and a double-blind research design. Anesthesia was defined as no response to maximum output of an electric pulp tester. An overall success rate of 35.4% was achieved. Duration of anesthesia obtained with bupivacaine HCl ranged from 4 minutes 59 seconds to 16 minutes 37 seconds with a mean duration of 10 minutes 24 seconds. Excluding one instance in which the duration was three orders of magnitude beyond the norm, duration of anesthesia obtained with lidocaine HCl ranged from 1 minute 43 seconds to 16 minutes 16 seconds with a mean duration of 7 minutes 10 seconds. Postoperatively, all experimental teeth tested vital with no clinically apparent pulpal or periodontal damage. Some postoperative discomfort was experienced at 16.6% of the injection sites.

Adult↗