Dentist-administered cognitive behavioural therapy versus four habits/midazolam: An RCT study of dental anxiety treatment in primary dental care

Changes in symptoms of anxiety, depression, and PTSD in an RCT-study of dentist-administered treatment of dental anxiety

BACKGROUND

Educating dentists in treatment methods for dental anxiety would increase the patients' access to treatments that are important to their oral health. However, to avoid adverse effects on comorbid symptoms, involvement by a psychologist has been considered necessary. The objective of the present paper was to evaluate whether a dentist could implement systematized treatments for dental anxiety without an increase in comorbid symptoms of anxiety, depression or PTSD.

METHODS

A two-arm parallel randomised controlled trial was set in a general dental practice. Eighty-two patients with self-reported dental anxiety either completed treatment with dentist-administered cognitive behavioural therapy (D-CBT, n = 36), or received dental treatment while sedated with midazolam combined with the systemized communication technique "The Four Habits Model" (Four Habits/midazolam, n = 41). Dental anxiety and comorbid symptoms were measured pre-treatment (n = 96), post-treatment (n = 77) and one-year after treatment (n = 52).

RESULTS

An Intention-To-Treat analysis indicated reduced dental anxiety scores by the Modified Dental Anxiety Scale (median MDAS: 5.0 (-1,16)). The median scores on the Hospital Index of Anxiety and Depression (HADS-A/D) and the PTSD checklist for DSM-IV (PCL) were reduced as follows: HADS-A: 1 (-11, 11)/HADS-D: 0 (-7, 10)/PCL: 1 (-17,37). No between-group differences were found.

CONCLUSIONS

The study findings support that a general dental practitioner may treat dental anxiety with Four Habits/Midazolam or D-CBT without causing adverse effects on symptoms of anxiety, depression or PTSD. Establishing a best practice for treatment of patients with dental anxiety in general dental practice should be a shared ambition for clinicians, researchers, and educators.

TRIAL REGISTRATION

The trial was approved by REC (Norwegian regional committee for medical and health research ethics) with ID number 2017/97 in March 2017, and it is registered in clinicaltrials.gov 26/09/2017 with identifier: NCT03293342.

The effectiveness of a diagnostic interview and modified one-session treatment for dental anxiety in primary dental care-A pilot study

AIMS

To investigate the effectiveness of a cognitive-behavioral intervention that included either a diagnostic interview (DI) or a DI combined with modified one-session treatment (M-OST) for dental anxiety among adults in a primary care setting.

METHODS AND RESULTS

Nineteen participants were assigned to either a DI before conventional dental treatment (group T1) or DI and M-OST (group T2). The severity of dental anxiety was measured with three self-reported measures before and after the intervention: the Modified Dental Anxiety Scale (MDAS), the Index of Dental Anxiety and Fear (IDAF-4C), and the Visual Analogue Scale-Anxiety (VAS-A). Dental care attendance was enquired in a 1-year follow-up. The scores for all three scales decreased among both study groups, with the largest decrease recorded in treatment group T1 assessed with the VAS-A. A higher dental anxiety score measured before the intervention associated most significantly with a higher dental anxiety score after the intervention. At the 1-year follow-up, 82% of participants in T1 and 67% in T2 had visited a dentist.

CONCLUSION

A DI alone and combined with M-OST is potentially effective in reducing dental anxiety and in supporting the engagement of adult patients with dental treatment in primary dental care.

The complexity of dental anxiety and its association with oral health-related quality of life: An exploratory study

This study aimed to explore the factors associated with oral health-related quality of life (OHRQoL) in a sample with high dental anxiety. Data were obtained from 107 patients attending a therapeutic treatment program for people who have experienced abuse and for those with dental phobia in Norway. Patients completed questionnaires, including the Index of Dental Anxiety and Fear, the Anxiety subscale of the Hospital Anxiety and Depression Scale, and the Oral Impacts on Daily Performance scale, measuring OHRQoL prior to treatment. The various measurement instruments were evaluated psychometrically, and the variables associated with OHRQoL were explored using hierarchical multiple regression. Symptoms of dental anxiety and general anxiety were high, while OHRQoL was poor. Dental anxiety, higher age, higher number of years since the last dental treatment, and higher general anxiety were discernibly associated with lower OHRQoL. The strongest association was found between general anxiety and OHRQoL. In conclusion, several factors were associated with OHRQoL in a sample with high dental anxiety, suggesting a complex picture of dental anxiety. When treating patients with high dental anxiety, dental practitioners should be aware that there may be factors complicating the therapeutic setting, such as general anxiety.

Dental anxiety treatment by a dentist in primary care: A 1-year follow-up study

In an earlier randomized controlled trial of dental anxiety treatments (n = 96) we compared the effects of dentist‐administered cognitive behavioural therapy (D‐CBT) and dental treatment supplemented with the Four Habits communication model plus midazolam sedation. Both treatments, applied in a general dental practice, were associated with a clinically relevant decrease in dental anxiety. In this follow‐up study, 52 of the 82 treatment completers responded to an online questionnaire 1 year post‐treatment. Reduction in dental anxiety persisted for both treatment groups. From baseline to 1 year post‐treatment the Modified Dental Anxiety Scale was reduced by 7.8 [SD: 4.4; Cohen's d effect size: 1.2 (CI: 0.8–1.7)] and 7.8 [SD: 4.2; Cohen's d: 1.4 (0.9–1.8)] in the D‐CBT and Four Habits/midazolam groups, respectively. Most patients (74% for D‐CBT, 80% for Four Habits/midazolam) continued with dental treatment. Nine patients in the D‐CBT and seven in the Four Habits/midazolam groups received additional CBT treatment from a psychologist/dentist team. Both methods tested should be accessible to interested dentists who receive adequate training. Effective first‐line treatments for dental anxiety in general dental practice can generate more accessible care pathways for patients with dental anxiety. Evidence‐based dental anxiety treatment programmes should be included in the dental curriculum and established as best practice for dentists.

The Relationship between Dental Fear and Anxiety, General Anxiety/Fear, Sensory Over-Responsivity, and Oral Health Behaviors and Outcomes: A Conceptual Model

Dental fear and anxiety (DFA) is common across the lifespan and represents a barrier to proper oral health behaviors and outcomes. The aim of this study is to present a conceptual model of the relationships between DFA, general anxiety/fear, sensory over-responsivity (SOR), and/or oral health behaviors and outcomes. Two rounds of literature searches were performed using the PubMed database. Included articles examined DFA, general anxiety/fear, SOR, catastrophizing, and/or oral health behaviors and outcomes in typically developing populations across the lifespan. The relationships between the constructs were recorded and organized into a conceptual model. A total of 188 articles were included. The results provided supporting evidence for relationships between DFA and all other constructs included in the model (general anxiety/fear, SOR, poor oral health, irregular dental attendance, dental behavior management problems [DBMP], and need for treatment with pharmacological methods). Additionally, SOR was associated with general anxiety/fear and DBMP; general anxiety/fear was linked to poor oral health, irregular attendance, and DBMP. This model provides a comprehensive view of the relationships between person factors (e.g., general anxiety/fear, SOR, and DFA) and oral health behaviors and outcomes. This is valuable in order to highlight connections between constructs that may be targeted in the development of new interventions to improve oral health behaviors and outcomes as well as the experience of DFA.