Durability of restorations in primary molars

Area of Science:

• Pediatric Dentistry
• Dental Materials Science

Background:

• Restorative techniques for carious primary molars have evolved with new adhesive materials.
• Clinical trials are crucial for assessing restorative technique efficacy.

Purpose of the Study:

• To review and compare the efficacy of amalgam, composite, and glass polyalkenoate (ionomer) cements, and extracoronal restorations for primary molars.

Main Methods:

• Literature review of clinical trial data on various restorative materials.
• Analysis of survival rates and failure rates for different restoration types.

Main Results:

• Stainless steel/nickel chrome crowns offer the most durable restoration.
• Amalgam restorations survive approximately 3 years, with improved longevity in older children and with local anesthesia.
• Resin composites have comparable short-term durability to amalgam but exhibit a high failure rate (62%) at 6 years.
• Conventional glass ionomer cements show a 33% success rate over 5 years, with potential advantages of minimal tooth destruction and fluoride release.

Conclusions:

• Stainless steel crowns are superior for long-term durability in primary molars.
• Amalgam and glass ionomer cements demonstrate better long-term survival rates compared to resin composites.
• Glass ionomer cements offer conservative restoration with potential cariostatic benefits.