Utomo, Haryono, Indah Listiana Kriswandini, and Diah Savitri Ernawati. 2006. “The Periodontal Pain Paradox: Difficulty on Pain Assesment in Dental Patients (The Periodontal Pain Paradox Hypothesis)”. Dental Journal 39 (4):143-46. https://doi.org/10.20473/j.djmkg.v39.i4.p143-146.