Volume 19, Issue 2 pp. 79-87
ORIGINAL ARTICLE

Risk factors of medication-related osteonecrosis of the jaw in preventive tooth extraction before bone resorption inhibitor administration: A multicenter nested case–control study

Taro Saito

Corresponding Author

Taro Saito

Division of Oral and Maxillofacial Surgery, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan

Correspondence

Taro Saito, Division of Oral and Maxillofacial Surgery, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, 2-5274, Gakkocho-dori, Chuo-ku, Niigata 951-8514, Japan.

Email: [email protected]

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Atsushi Nishikawa

Atsushi Nishikawa

Division of Oral and Maxillofacial Surgery, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan

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Yuko Hara-Saito

Yuko Hara-Saito

Division of Oral and Maxillofacial Surgery, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan

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Andrea Rei Estacio Salazar

Andrea Rei Estacio Salazar

Division of Oral and Maxillofacial Surgery, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan

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Akira Kurokawa

Akira Kurokawa

Division of Oral and Maxillofacial Surgery, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan

Oral Management Clinic for Medical Cooperation, Niigata University Medical and Dental Hospital, Niigata, Japan

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Akihiko Iida

Akihiko Iida

Department of Dentistry and Oral Maxillofacial Surgery, Nagaoka Red Cross Hospital, Niigata, Japan

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Masahiro Yamaga

Masahiro Yamaga

Department of Dentistry and Oral Maxillofacial Surgery, Nagaoka Chuo General Hospital, Niigata, Japan

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Hiroyuki Kano

Hiroyuki Kano

Clinic of Oral and Maxillofacial Surgery, Niigata Prefectural Community Medicine Institute Uonuma Kikan Hospital, Niigata, Japan

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Yusuke Kato

Yusuke Kato

Department of Oral and Maxillofacial Surgery, Uonuma Institute of Community Medicine, Niigata University Medical and Dental Hospital, Niigata, Japan

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Yoshiyuki Takata

Yoshiyuki Takata

Department of Dentistry and Oral Maxillofacial Surgery, Niigata City General Hospital, Niigata, Japan

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Hideyoshi Nishiyama

Hideyoshi Nishiyama

Division of Oral and Maxillofacial Radiology, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan

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Nobutaka Kitamura

Nobutaka Kitamura

Clinical and Translational Research Center, Niigata University Medical and Dental Hospital, Niigata, Japan

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Takahiro Tanaka

Takahiro Tanaka

Clinical and Translational Research Center, Niigata University Medical and Dental Hospital, Niigata, Japan

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Ritsuo Takagi

Ritsuo Takagi

Division of Oral and Maxillofacial Surgery, Faculty of Dentistry and Graduate School of Medical and Dental Sciences, Niigata University, Niigata, Japan

Oral Management Clinic for Medical Cooperation, Niigata University Medical and Dental Hospital, Niigata, Japan

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First published: 20 September 2021
Citations: 1

Abstract

Introduction

Medication-related osteonecrosis of the jaw (MRONJ) occurs even after teeth with poor prognosis had been preventively extracted and medication had been initiated. In this nested case–control study, we focused on tooth extraction before bone resorption inhibitor administration for the treatment of malignant tumors.

Materials and Methods

A total of 180 teeth of 58 patients who were treated with zoledronic acid and/or denosumab from April 2012 to December 2016 at our hospital or partner institutions were included in this multicenter study. All participants underwent tooth extraction within 1 year before initiating therapy and were followed up for at least 1 year or at most 3 years after initiating bone resorption inhibitor administration. We evaluated the systemic and local risk factors: sex, age, cancer type, overweightness/obesity, anemia, undernutrition, diabetes, smoking, concomitant drugs, tooth extraction site, use of antibacterial drugs, wound closure, and waiting period between tooth extraction and medication.

Results

MRONJ occurred in 18 teeth of 10 patients and not in 162 teeth of 48 patients. Based on the Cox proportional hazards model, concomitant administration of angiogenesis inhibitors, mandibular molar, periapical radiolucency, and osteosclerosis of the surrounding areas were considered essential risk factors for MRONJ.

Conclusions

Chronic inflammation of the bone surrounding extracted teeth may be an essential risk factor for MRONJ when preventive tooth extraction is performed before the administration of bone resorption inhibitors for patients with malignant tumors.

CONFLICT OF INTERESTS

The authors declare no conflicts of interest associated with this manuscript.

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