Abstracts » Health

Comparing the resistance of dentin bonding agents and pins in amalgam restorations

Article Abstract:

Silver fillings that require maximum retention and resistance against displacement should be anchored to the tooth structure with a dentin bonding agent and a mechanical retention device. Researchers anchored silver fillings to 84 extracted molars with the dentin bonding agents, Amalgambond or Amalgambond Plus, retentive pins, or a combination of Amalgambond and pins. Investigators applied mechanical force to measure the strength of the bonds. Fillings secured with Amalgambond were significantly weaker than fillings anchored with Amalgambond Plus, retentive pins, or pins and Amalgambond combined. Fillings retained with both Amalgambond and pins were the most fracture-resistant. The average filling retained with these products was more than twice as fracture-resistant as the average filling retained with Amalgambond alone.

Dental bonding

---

Teaching class I and class II direct composite restorations: results of a survey of dental schools

Article Abstract:

Most North American dental schools teach direct posterior composite restoration of teeth, but few devote significant training or clinical time to teaching the procedures. Tooth restorations in stress-bearing areas can be challenging, and the result is generally not as long-lasting as silver amalgam restorations. Of 54 dental schools surveyed, all but one taught the technique, and 83% devoted less than 20% of their operative dentistry training to this restoration method. Most agreed on the indications and contraindications for posterior composite restoration.

Health aspects, Surveys, Study and teaching, Dental schools

---

Efficacy of preformed metal crowns vs. amalgam restorations in primary molars: a systematic review

Article Abstract:

A preformed metal crown appears to be better than an amalgam filling for some extensive cavities. Amalgam must conform to the cavity size and shape. This is not necessary when using preformed metal crowns. Researchers reviewed the dental literature comparing amalgams with preformed metal crowns. The failure rate of preformed metal crowns ranged from 1.9% to 30% whereas the failure rate of amalgams ranged from 11.6% to 88.7%.

Evaluation

Some parts © 2012 Advameg, Inc.