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Patients with periodontal diseases often present deep pockets that require scaling and root planing (SRP), during which local anesthesia of the periodontal tissues may be required to control pain. 1 To achieve proper anesthesia of the mucogingival tissues in the maxilla, up to 5 injections of the anesthetic solution may be needed. 1 These injections are applied to anesthetize the posterior, middle, and anterior superior alveolar nerves, and the greater palatine and nasopalatine nerves. 2 Although these series of anesthetic injections are

/or dental anxiety; a comprehensive review of main tests for anxiety and pain evaluation in dentistry has been published by Newton and Buck in 2000. 18 Of 15 tests mentioned in this review, Corah's Dental Anxiety Scale (DAS) is the most widely used. 19 – 21 Despite its wide use and effectiveness, DAS has been criticized as exhibiting a narrow range of scores 22 and showing low resolution for intermediate levels of anxiety 23 ; furthermore, DAS cannot check all aspects of anxiety, such as personality‐related components (e.g., the role of pessimism and negative thoughts

patients with oral lichen planus. 21 In addition, they were higher in patients undergoing wisdom teeth extractions and prior to urgent dental care. 22 Similar to alpha amylase, cortisol has a definite circadian rhythm. The Dental Anxiety Scale (DAS), devised by Norman Corah in 1969, is the most commonly used scale to measure dental anxiety. 23 It was found to have high validity and is easy to administer; therefore, it was adopted as a measure of dental anxiety in this study. Stress and sAA associations have been well documented and studied in the