Table 2.

Excluded articles and causes of exclusion.

No.	Author	Title	Causes of exclusion
1	Arasteh et al. [23]	Frequency of obsessive-compulsive symptoms and related factors in medical and dental students of kurdistan university of medical sciences, 2018	Assessment of OCD was carried out in medical and dental students. Dental patients were not involved in this study.
2	Budman and Sarcevic [24]	An unusual case of motor and vocal tics with obsessive-compulsive symptoms in a young adult with Behçet's disease	A case report that describes nondental patient with Behcet's disease who showed motor and vocal tics with OCD.
3	Cassin et al. [25]	Quality of life in treatment-seeking patients with obsessive-compulsive disorder with and without major depressive disorder	A study that compares the quality of life of a patient with OCD in relation to depression comorbidity. Dental patients were not involved in this study.
4	Cockburn et al. [31]	Oral health impacts of medications used to treat mental illness	The study design is a review article.
5	de Jongh [39]	Mental problems in the dental practice: a compulsive disorder	The article was written in Dutch.
6	De Stefano et al. [32]	Fear and anxiety managing methods during dental treatments: a systematic review of recent data	The study design is a review article.
7	Dougall and Fiske [33]	Access to special care dentistry, part 6. Special care dentistry services for young people	The study design is a review article.
8	Doukhan et al. [26]	A case of bleach addiction associated with severe obsessive-compulsive disorder	A case report that describes a patient having OCD with bleach use addiction (not related to dental use or teeth bleaching).
9	Elmgreen and Danielsen [40]	OCD and orofacial dyskinesia caused by a rare basal ganglia disorder	The article was written in Danish.
10	Friedlander and Eth [34]	Dental management considerations in children with obsessive-compulsive disorder	The study design is a review article.
11	Friedlander and Serafetinides [35]	Dental management of the patient with obsessive‐compulsive disorder	The study design is a review article.
12	Friedlander and Cummings [36]	Dental treatment of patients with Gilles de la Tourette's syndrome	The study design is a review article.
13	Hollander et al. [28]	A placebo controlled crossover trial of liquid fluoxetine on repetitive behaviors in childhood and adolescent autism	The article describes the effects of fluoxetine as a selective serotonin reuptake inhibitor liquid on the repetitive behaviors in 45 child or adolescent patients with autism spectrum disorders (ASDs). OCD behaviors were not reported in this study.
14	Kayhan et al. [27]	Obsessive-compulsive disorder concurrent with Melkersson-Rosenthal Syndrome: A case report	A case report that describes a patient with OCD and Melkersson-Rosenthal Syndrome (MRS). The patient was admitted to psychiatry department without reporting dental-related symptoms.
15	Keim [37]	The most difficult cases	The article is an editor's corner.
16	Moore and Hersh [38]	Common medications prescribed for adolescent dental patients	The study design is a review article.
17	Paterson and Watson [29]	Case report: prolonged match chewing: an unusual case of tooth wear	A report that describes a case of sand eating habit that caused abrasive tooth wear. The patient was not diagnosed with OCD.
18	Rahman et al. [30]	Oral health status of patients with psychiatric problem	A cross-sectional study that examined the oral health status of 75 psychiatric patients. The major reported mental illness was schizophrenia. OCD was not reported in these patients.