Pulpotomy Versus Pulpectomy in Vital Primary Incisors
Condition: Dental Caries; Pulp Disease, Dental
MeSH terms: Dental Caries; Dental Pulp Diseases; Stomatognathic Diseases
Study type: Interventional

Summary: 
      The aim of this split mouth randomized controlled study was to compare formocresol pulpotomy
      and zinc-oxide and eugenol pulpectomy in the treatment of vital pulp exposure in primary
      incisor. 39 Contralateral pairs of incisors were randomly assigned to receive pulpotomy or
      pulpectomy in children aged from 18 to 66 months old.

      Clinical and radiographical evaluations were performed at 6 and 12 months
    

Detailed description: 
      -  This randomized controlled trial with split mouth design

        -  The study was approved by the research ethics committee of the National research centre.

        -  Participants in this study were recruited from August 2015 till December 2016. Patients'
           eligibility criteria were medically free patients, aging from 18 to 66 months old, with
           two or more carious vital primary maxillary incisors where exposure of the vital pulp
           following the removal of dental caries was inevitable.

        -  Sample size was calculated using PS Computer Program .A study of matched cases and
           controls was planned. Prior data indicated that success rates among controls were 0.78 .
           If the true success rate for experimental subjects is 1, then we needed to study 31
           pairs to be able to reject the null hypothesis that the success rates for experimental
           and control subjects are equal with probability (power) 0.8. The Type I error
           probability associated with this test of this null hypothesis is 0.05.McNemar's
           chi-squared statistic was used to evaluate this null hypothesis. This number has been
           increased to a total sample size 39 in each group, to allow for losses of around 25%.

        -  The procedure, possible discomforts or risks, as well as possible benefits were
           explained completely to the parents or legal guardians, and they were allowed to sign in
           the patients' ethics form.

        -  The child participants and legal guardian of each participating child were blinded to
           the type of treatment they received while it was not possible for the operator or the
           radiographic assessors to be blinded due to the nature of the treatment received.

        -  An incisor in each pair was randomly assigned by a coin toss to either the intervention
           (pulpotomy group) on the head side or the control (pulpectomy group) on the tail side
           with the contralateral paired incisor being designated to the other treatment group.

        -  Clinical examination and preoperative periapical radiographs were performed for eligible
           patients. After induction of anesthesia, teeth were properly isolated with cotton rolls
           and suction as rubber dam was not tolerated by children less than 6 years of age.
           Complete removal of caries or undermined enamel was performed before access cavity
           preparation.•

        -  For follow up: Clinical evaluation was performed on all primary incisors during the
           follow-up visits at one, six and twelve months post-operatively while radiographic
           evaluation was performed at six and twelve months follow up visits

        -  For radiographic evaluation, the radiographs were taken with a size 0 or 1 periapical
           films (D-speed Film, Ultra-speed Carestream Dental,USA) using the bisecting angle
           technique. The radiographs were scanned on a viewer and transmitted to a computer
           hardware to be properly saved. The evaluation was performed by two independent assessors
           and differences were solved by consensus. Data analysis was performed on the consensus
           scores.

        -  For Statistical analysis, Chi square test was used to compare between the two groups.
           The significance level was set at P ≤ 0.05. Also estimated effect size was calculated
           with 95% Confidence Interval. Kaplan-Meier used for survival analysis. Statistical
           analysis was performed with IBM® SPSS® (SPSS Inc., IBM Corporation, NY, USA) .
    

Intervention name(s): pulpotomy technique with formocresol; pulpectomy technique with zinc oxide and eugenol
Intervention type(s): Procedure; Procedure
Intervention description(s): The pulpotomy procedure performed was a modification of that described by Pinkham et al; 2005 where pulp chamber was unroofed using a no. 330 sterile bur in a water-cooled high-speed handpiece. The entire roof of pulp chamber and overhanging dentinal remnants over the pulp horns were removed. After the completion of the access cavity, coronal pulp was extirpated using a sharp excavator. Any residual coronal pulpal tissue was removed using a sterile round bur in a slow-speed handpiece to a depth of few millimeters below the free gingival margin. Hemostasis was achieved with a water-dampened cotton pellet. If hemostasis was not achieved after the initial application of the cotton pellet, the case was eliminated from the study. Following hemostasis, a cotton pellet, moistened with formocresol was applied for 3 minutes and removed. A zinc- oxide and eugenol base was placed over the amputation site. Thereafter, a glass ionomer base was applied.; The pulpectomy procedure used herein was a modification of that described by Payne et al;1993 Pulp chamber was unroofed using a no. 330 sterile bur in a water-cooled high-speed handpiece. The entire roof of pulp chamber and overhanging dentinal remnants over the pulp horns were removed. An initial endodontic K-file fitting snugly in the canal was introduced inside it. In most cases, the pulp tissue was removed completely on the first attempt. If the first attempt was unsuccessful, the procedure was repeated and canals were generally enlarged three sizes past the initial file to eliminate the organic remnants. Copious irrigation with a light flow of sterile 0.9% NaCl-solution was used throughout the procedure. At the end, the canals were dried and filled with zinc-oxide & eugenol.
Other intervention name(s): vital pulp therapy; root canal treatment
Intervention MeSH terms: Eugenol; Zinc Oxide
Allocation: Randomized
Intervention model: Parallel Assignment
Intervention model description: split mouth
Masking: Double (Participant, Outcomes Assessor)
Primary purpose: Treatment
Keywords: pulpotomy; pulpectomy; tooth, deciduous