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Clinical characteristics and course of oral somatic delusions: a retrospective chart review of 606 cases in 5 years

Authors Umezaki Y, Miura A, Shinohara Y, Mikuzuki L, Sugawara S, Kawasaki K, Tu TTH, Watanabe T, Suga T, Watanabe M, Takenoshita M, Yoshikawa T, Uezato A, Nishikawa T, Hoshiko K, Naito T, Motomura H, Toyofuku A

Received 7 March 2018

Accepted for publication 27 April 2018

Published 13 August 2018 Volume 2018:14 Pages 2057—2065

DOI https://doi.org/10.2147/NDT.S167527

Checked for plagiarism Yes

Review by Single-blind

Peer reviewers approved by Dr Andrew Yee

Peer reviewer comments 3

Editor who approved publication: Dr Taro Kishi


Yojiro Umezaki,1 Anna Miura,2 Yukiko Shinohara,2 Lou Mikuzuki,2 Shiori Sugawara,2 Kaoru Kawasaki,2 Trang TH Tu,2 Takeshi Watanabe,2 Takayuki Suga,2 Motoko Watanabe,3 Miho Takenoshita,2 Tatsuya Yoshikawa,2 Akihito Uezato,4 Toru Nishikawa,4 Ken Hoshiko,5 Toru Naito,1 Haruhiko Motomura,2 Akira Toyofuku2

1Section of Geriatric Dentistry, Department of General Dentistry, Fukuoka Dental College, Fukuoka, Japan; 2Department of Psychosomatic Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; 3Department of Oral and Maxillofacial Radiology, Tokyo Dental College, Tokyo, Japan; 4Department of Psychiatry and Behavioral Sciences, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan; 5Department of Pharmacy, Dental Hospital, Tokyo Medical and Dental University, Tokyo, Japan

Objective: Oral cenesthopathy is characterized by foreign body sensations without medical and dental evidence for them. It is thought to be a rare disease in psychiatry, but many patients are visiting dental clinics seeking treatment to remove a foreign body. Even though the features of oral cenesthopathy might be different between a psychiatric clinic and a dental clinic, there has been no clinico-statistical study from dentists. In this study, we report a clinico-statistical study of patients with oral cenesthopathy in dentistry.
Methods: This is a retrospective chart review of 606 outpatients with oral cenesthopathy in Tokyo Medical and Dental University from April 2010 through to March 2015.
Results: A total of 159 male and 447 female patients were included in this study. The mean age was 62.08 years, and female patients were older than male patients. The trigger of the dental treatment and the acute phase of depression at the onset were significantly related (p=0.037). Only 128 patients (36%) had clinically significant improvement after 6 months of pharmacotherapy. No history of psychiatric disorders (odds ratio [OR] 0.479 [95% confidence interval {CI}: 0.262–0.875], p=0.017) and longer duration of illness (>18 months) (OR 2.626 [95% CI: 1.437–4.799], p=0.002) were significant factors for clinical outcomes.
Conclusion: Patients with oral cenesthopathy in our clinic were predominantly elderly female patients. Dental treatment in the acute phase of depression might be a risk factor for oral cenesthopathy. Therefore, comprehending the situation of psychiatric disorder and obtaining adequate informed consent might be required to prevent the trouble concerning oral cenesthopathy.

Keywords: oral cenesthopathy, delusional disorder somatic type, DDST, chart review, dentistry

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