University of Oulu

Battsetseg Tseveenjav, Jussi Furuholm, Aida Mulic, Håkon Valen, Tuomo Maisala, Seppo Turunen, Sinikka Varsio, Merja Auero & Leo Tjäderhane (2021) Survival of primary molars with pulpotomy interventions: public oral health practice-based study in Helsinki, Acta Odontologica Scandinavica, 79:8, 636-641, DOI:

Survival of primary molars with pulpotomy interventions : public oral health practice-based study in Helsinki

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Author: Tseveenjav, Battsetseg1,2,3,4; Furuholm, Jussi1,3; Mulic, Aida3;
Organizations: 1Department of Oral and Maxillofacial Diseases, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
2Department of Social Services and Health Care, City of Helsinki, Oral Health Care, Helsinki, Finland
3Nordic Institute of Dental Materials (NIOM), Oslo, Norway
4Department of Maxillofacial Surgery, Päijät-Häme Central Hospital, Päijät-Häme
5Department of Health, Ministry of Social Affairs and Health, Helsinki, Finland
6Research Unit of Oral Health Sciences and Medical Research Center Oulu, Oulu University Hospital and University of Oulu, Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.1 MB)
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Language: English
Published: Informa, 2021
Publish Date: 2021-11-25


Objectives: To assess long-term survival of pulpotomized primary molars and factors related to the survival of the teeth.

Materials and methods: This retrospective longitudinal study was based on electronic dental health records of children who attended public health service. Eligible children were <12 years and had a pulpotomy procedure code in their dental treatment history. Data were obtained in the period between 2002 and 2016. Chi-squared test, t-test, and one-way ANOVA were used to assess for statistical differences. Kaplan–Meier analyses were performed to create survival estimates, and the log-rank test was performed to compare differences in survival distributions. A multivariate Cox regression was conducted, and hazard ratios were calculated to estimate the hazard rate for failure.

Results: Of interventions, 40% were registered in children 3–6 years of age; 56% were boys. Mean estimated survival of such molars was 82 months (SEM = 0.6) and differed by dental operator’s work setting and choice of restorative materials used after pulpotomy intervention. Using a stainless steel crown (SSC) to restore pulp-intervened primary molars had the strongest effect on survival (111 months with SEM = 1.8), followed by if the intervention was performed by a specialist or specializing dentist in paediatric dentistry (99 months with SEM = 2.6).

Conclusions: The estimated survival time of pulpotomized primary molars is affected by dental operator-related factors, which should be considered in management of extensively carious primary molars of paediatric patients, both at the clinical and organizational decision-making levels. An increased focus on the use of SSC is recommended to be in the learning objectives of dental education programs.

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Series: Acta odontologica Scandinavica
ISSN: 0001-6357
ISSN-E: 1502-3850
ISSN-L: 0001-6357
Volume: 79
Issue: 8
Pages: 636 - 641
DOI: 10.1080/00016357.2021.1928747
Type of Publication: A1 Journal article – refereed
Field of Science: 313 Dentistry
Funding: BT thanks the Finnish Women dentists’ Society for a research grant.
Copyright information: © 2021 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group on behalf of Acta Odontologica Scandinavica Society. This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (, which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.