Equivalency study of histological responses to complete or partial pulpotomies in inflamed baboon immature first permanent molars.

Abstract

UNLABELLED:

Partial pulpotomy is an accepted treatment for traumatised incisor teeth with exposed pulps. Clinical studies in humans suggest that this may also be an acceptable technique for carious exposed pulps in molar teeth, but objective histological evidence to support this perception is lacking.

OBJECTIVE:

To compare histological responses to complete or partial pulpotomies of inflamed pulps in immature baboon first permanent molar teeth.

METHODS:

An experimental study in the baboon (Papio ursinus). Pulpitis was induced with fresh Streptococcus mutans placed into occlusal cavities with a small pulpal exposure in 34 first permanent molars of 9 juvenile baboons. After 14 days a pulpotomy, either complete or partial, was performed on the same molars in contra-lateral quadrants using calcium hydroxide covered with IRM and amalgam. After 90 days specimens were harvested and examined under the light microscope with the examiner blind to the treatment.

RESULTS:

Reaction frequencies in the complete and partial pulpotomy teeth were: dentine bridges 9/16 and 10/16, viable pulp in root canals 10/16 and 13/18, peri-apical abscesses 3/13 and 4/13. Fisher's exact probability test showed no statistically significant rates between the groups.

CONCLUSIONS:

Complete or partial pulpotomy of inflamed pulps in immature baboon first permanent molars produced comparable reactions.

• Authors: P Cleaton-Jones, M Duggal, R Parak, S Williams, S Setzer
• Journal: SADJ : journal of the South African Dental Association = tydskrif van die Suid-Afrikaanse Tandheelkundige Vereniging (SADJ) Vol. 62 Issue 2 Pg. 062-5 (Mar 2007) ISSN: 1029-4864 [Print] South Africa
• PMID: 17624175 (Publication Type: Comparative Study, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Methylmethacrylates
• Zinc Oxide-Eugenol Cement
• IRM cement
• Dental Amalgam
• Calcium Hydroxide

Topics

• Animals
• Calcium Hydroxide (therapeutic use)
• Dental Amalgam
• Dental Pulp (microbiology, pathology)
• Dental Pulp Capping
• Dental Pulp Cavity (microbiology, pathology)
• Dental Pulp Exposure (microbiology, pathology, therapy)
• Dental Pulp Necrosis (etiology)
• Dental Restoration, Permanent
• Dentin, Secondary (pathology)
• Methylmethacrylates (therapeutic use)
• Molar (pathology)
• Papio ursinus
• Periapical Abscess (etiology)
• Pulpitis (microbiology, pathology, therapy)
• Pulpotomy (methods)
• Streptococcal Infections (therapy)
• Streptococcus mutans
• Tooth Apex (pathology)
• Zinc Oxide-Eugenol Cement (therapeutic use)