Comparative evaluation of effects of chemo-mechanical and conventional caries removal on dentinal morphology and its bonding characteristics - an SEM study.

Abstract

AIM:

To compare the efficacy of three caries removal techniques namely: Papacarie(®), calcium hydroxide and rotary instruments by SEM analyses of the micro-morphology of residual dentine and resin tags at resin-dentine interface.

METHODS:

45 extracted human permanent molar teeth, with occlusal caries extending up to dentine, were divided into two groups (Group 1 and 2) and each group was subdivided into three subgroups: subgroup A included teeth treated with conventional rotary method, subgroup B and C included those treated with calcium hydroxide and Papacarie(®) respectively. Group 1 samples were prepared for viewing the micro-morphology of residual dentine (2000x and 5000x) and Group 2 samples were filled with composite resin and analysed for resin tag formation (1000x) under SEM.

RESULTS:

Papacarie(®) showed minimal smear layer and open dentinal tubules. Calcium hydroxide and rotary instruments showed a typical smear layer and occluded dentinal tubules. Resin tags obtained with Papacarie(®) were the longest and significantly superior to those obtained with rotary and calcium hydroxide.

CONCLUSIONS:

Papacarie(®) exhibited better bonding characteristics of residual dentine than calcium hydroxide and rotary method of caries removal. Thus, Papacarie(®) is a suitable alternative to conventional method of caries removal, especially in paediatric patients.

• Authors: R Arora, M Goswami, S Chaudhary, T R Chaitra, A Kishor, M Rallan
• Journal: European archives of paediatric dentistry : official journal of the European Academy of Paediatric Dentistry (Eur Arch Paediatr Dent) Vol. 13 Issue 4 Pg. 179-84 (Aug 2012) ISSN: 1818-6300 [Print] England
• PMID: 22883356 (Publication Type: Comparative Study, Journal Article)

Chemical References

• CeramX
• Composite Resins
• Dental Materials
• Papacarie
• Phosphoric Acids
• Polymethacrylic Acids
• Prime and Bond NT
• Resin Cements
• Diamond
• phosphoric acid
• Papain
• Calcium Hydroxide

Topics

• Acid Etching, Dental (methods)
• Calcium Hydroxide (therapeutic use)
• Composite Resins (chemistry)
• Dental Bonding
• Dental Cavity Preparation (instrumentation, methods)
• Dental Materials (chemistry)
• Dentin (ultrastructure)
• Diamond (chemistry)
• Humans
• Materials Testing
• Microscopy, Electron, Scanning
• Papain (therapeutic use)
• Phosphoric Acids (chemistry)
• Polymethacrylic Acids (chemistry)
• Resin Cements (chemistry)
• Smear Layer
• Surface Properties