Bunrowd K. Esthetic Crown Lengthening in Maxillary Anterior Region: A Case Report of Altered Passive Eruption. Reg11MedJ [internet]. 2020 Sep. 23 [cited 2026 Sep. 20];34(3):84-9. available from: https://he02.tci-thaijo.org/index.php/Reg11MedJ/article/view/244274