Luengrojjanakul, P., Tripuwabhrut, P., Kongtewelert, P., Ongchai, S. and Jotikasthira, D. (2020) “Comparisons of the Chondroitin Sulphate Levels and the Amount of Pain during Initial Orthodontic Leveling Phase between Passive Self-ligating and Conventional Bracket Systems”, Thai Journal of Orthodontics. Songkhla, Thailand, 9(2), pp. 4–14. available at: https://he01.tci-thaijo.org/index.php/THAIORTHO/article/view/249531 (accessed: 2 September 2026).