Number of consecutive procedures after endodontic treatment to extraction: A 28-year retrospective study

Paz Kles; Hilit Bar-On; Asher Zabrovsky; Keren Kles; Sharon Eldad; Gilad Ben-Gal

doi:10.1016/j.prosdent.2022.12.010

Number of consecutive procedures after endodontic treatment to extraction: A 28-year retrospective study

J Prosthet Dent. 2023 Mar 6:S0022-3913(23)00006-9. doi: 10.1016/j.prosdent.2022.12.010. Online ahead of print.

Authors

Paz Kles¹, Hilit Bar-On², Asher Zabrovsky³, Keren Kles⁴, Sharon Eldad⁵, Gilad Ben-Gal⁶

Affiliations

¹ Researcher, Department of Prosthodontics, The Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem, Israel.
² Clinical Instructor, Department of Prosthodontics, The Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem, Israel.
³ Lecturer, Department of Prosthodontics, The Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem, Israel.
⁴ Researcher, Institute of Biochemistry Food Science and Nutrition, Faculty of Agricultural, Food and Environmental Sciences, The Hebrew University, Jerusalem, Israel.
⁵ Clinical Lecturer, Department of Prosthodontics, The Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem, Israel.
⁶ Clinical Lecturer, Department of Prosthodontics, The Hebrew University-Hadassah Faculty of Dental Medicine, Jerusalem, Israel. Electronic address: gilad.bengal@mail.huji.ac.il.

PMID: 36890001
DOI: 10.1016/j.prosdent.2022.12.010

Abstract

Statement of problem: After endodontic treatment, teeth may require additional treatment. Data regarding the number of treatments up to extraction after endodontic treatment are lacking.

Purpose: The purpose of this retrospective study was to evaluate the number of consecutive restorative procedures performed on a specific tooth starting from endodontic treatment up to extraction. A comparison was made between crowned and uncrowned teeth.

Material and methods: A retrospective study was conducted using 28 years of data from a private clinic. The total number of patients was 18 082 and included 88 388 treated teeth. The data were collected for permanent teeth that received at least 2 consecutive retreatments. The data included tooth number, procedure type, date of procedure, total number of procedures conducted during the study period, extraction date, time from endodontic treatment to extraction, and whether the tooth had been crowned or not. Endodontically treated teeth were divided into 2 groups: extracted and nonextracted. In each group, a comparison was made between crowned and uncrowned teeth and between anterior and posterior teeth by using the Student t test (α=.05).

Results: In the non extracted group, teeth that were crowned required significantly (P<.05) fewer restorative treatments (mean ±standard deviation 2.9 ±2.1) than uncrowned teeth (5.01 ±2.98). For extracted teeth, the mean time from endodontic treatment until extraction was 10.39 years. Crowned teeth were extracted after a mean of 11.06 years and 3.98 treatments, while uncrowned teeth were extracted after a mean of 9.96 years and 7.22 treatments (P<.05).

Conclusions: Endodontically treated teeth that were crowned required significantly fewer subsequent restorative procedures than uncrowned teeth and exhibited higher survival rates up to extraction.