Concerns regarding pain constitute a large component of dental anxiety, and patients with high dental anxiety are likely to have exaggerated memory and prediction of dental pain. It remains to be investigated, however, if memory of anxiety is exaggerated in a manner similar to that of pain, and if anxiety and pain assimilate in memory over time. A sample of 79 patients presenting for emergency extraction rated their anxiety and pain before, during, and two weeks after the procedure. Measures of trait dental anxiety and fear of pain also were collected. All patients exaggerated their recall of procedure pain, but only those high in trait dental anxiety exaggerated their recall of anxiety. Highly anxious patients reported more pain prior to the procedure and expected more pain; ratings of anxiety and pain for all participants assimilated over time.
Autonomic arousal can be legitimately measured and modified as one facet of the pain response. Future research should particularly focus on increasing sample size and broadening the diversity of participants. To improve the ability to compare and contrast findings across studies, as well as to increase the applicability of laboratory findings to naturalistic pain, investigators also must enhance experimental design by increasing uniformity or accounting for differences in methodology. Finally, further work remains to utilize more specific assessments of autonomic response and to assess relationships of autonomic reactivity with other cognitive (e.g., attention) and affective (e.g., anxiety) variables.
Dental patients generally recall more pain than they originally report, with ratings of pain related to state anxiety and dental fear, but the role of depression in recall of dental pain remains uncertain. This study examined the relative contributions of different variables in explaining dental pain recalled after tooth extraction. Patients presenting for tooth extraction, prior to extraction, rated their current dental pain and state anxiety, prediction of pain and state anxiety during extraction, depression, and dental fear. Immediately postprocedure and then 1 mo later, patients rated their pain and state anxiety during extraction. Hierarchical linear regression equations were used to explain variance in recalled pain and state anxiety. In addition, patients were divided into high and low dental fear and depression groups and compared on ratings of pain and state anxiety across time. In a final sample of 157 patients, the most important predictors of recalled pain were pain reported during extraction (β = .53) and recalled state anxiety (β = .52). Dental fear and depression had a significant interaction: only when patients reported less depression did those patients who reported more dental fear also report more pain than patients who reported less dental fear (P < 0.05, ω(2) = .07). Patients who reported more depression entered the dental operatory reporting more pain, but all patients generally reported less pain during extraction than they predicted or recalled. Memory of state anxiety and pain reported during tooth extraction, not depression or state anxiety at the time of extraction, were critical factors in memory of the pain associated with the procedure. At higher levels of depression, patients higher and lower in dental fear did not differ in report of pain. Future studies are needed to further clarify interactions of depression and dental fear over time.
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