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International journal of odontostomatology

On-line version ISSN 0718-381X


SALINAS, Cristóbal; GUIDOTTI, Luigi; RODRIGUEZ, Carolina  and  SOTOMAYOR, Cristina. Survival of Deciduous Molar Teeth with Pulpotomy Treatment: A Kaplan-Meier Analysis. Int. J. Odontostomat. [online]. 2013, vol.7, n.3, pp.441-446. ISSN 0718-381X.

The aim of this study was to estimate the survival of deciduous molars, treated with pulpotomy at the Dental Clinic of the Universidad Austral de Chile, and its relation with age, sex and dental arch. The design was a retrospective cohort study. A census was made in which all patients of 4 to 10 years old treated at the Dental Clinic were included. Clinical records of patients treated between March 2008 until June 2011 were reviewed. In this study 125 patients with a total of 170 pulpotomies were included. A clinical exam was provided for those patients in which the pulpotomy had not failed. The patients who did not participate in this exam were considered censored, and the survival time was set from the date that the pulpotomy was performed to the last examination recorded in the clinical file. The analysis and tabulation was carried out the statistic program IBM SPSS Statistics 19. The median survival time was obtained through Kaplan Meier method. To determine the difference between age intervals, sex and dental arch the Mantel-Cox logrank method was used (p<0.05). The median survival time is 32 months. There was no statistical significant difference between the age intervals, sex and dental arch. Pulpotomy prognosis is good since it establishes a 50% probability of the molar remaining in the mouth at least 32 months, thereby fulfilling the aim of avoiding premature loss of the molar and related consequences.

Keywords : pulpotomy; deciduous teeth; survival analysis.

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