Undetected microscopic pulp exposures in deep class II cavities.

Area of Science:

• Dentistry
• Dental Materials
• Oral Surgery

Background:

• Pulp exposure during cavity preparations can compromise tooth vitality.
• Undiagnosed microexposures pose a risk to dental treatment outcomes.
• Deep Class II preparations are particularly susceptible to iatrogenic pulp insults.

Purpose of the Study:

• To investigate the incidence of clinically undiagnosed pulp microexposures in deep Class II preparations.
• To determine the probability of pulpal microexposure based on residual dentin thickness.

Main Methods:

• Thirty human premolars with deep Class II preparations were examined.
• The axial wall of each preparation was meticulously inspected for microexposures post-extraction.
• Residual dentin thickness (RDT) was a key factor in the analysis.

Main Results:

• Seven out of 30 teeth (23.7%) exhibited some form of pulp exposure.
• A significant correlation was observed between preparation depth and microexposure.
• Pulpal microexposure was found in approximately 1/5 of preparations with RDT < 0.5mm.

Conclusions:

• Clinically undiagnosed pulp microexposures are a notable concern in deep Class II cavity preparations.
• Dentists should be aware of the high probability of microexposure when RDT is minimal (< 0.5mm).
• Further research is warranted to explore preventative strategies and long-term clinical implications.