Effect of Aromatherapy on Pain and Anxiety During Orthodontic Extraction of Maxillary Premolars.

The goal of this randomized placebo-controlled split-mouth clinical trial is to determine whether aromatherapy using lemongrass essential oil can reduce pain, dental anxiety, and physiological stress responses during orthodontic extraction of maxillary premolars . The main questions it aims to answer are: * Does aromatherapy reduce pain perception during and after tooth extraction as measured by the Visual Analog Scale (VAS)? * Does aromatherapy reduce dental anxiety and improve oral health-related quality of life during the extraction procedure as measured by the Modified Dental Anxiety Scale (MDAS-DEP) and Oral Health Impact Profile-14 (OHIP-14)?