Determination of the compressive modulus of elasticity of periodontal ligament derived from human first premolars

• DOI: 10.1016/j.heliyon.2023.e14276
• Publication Date: 2023-03-04T01:43:30Z
• Authors: Nuttapol Limjeera...; Pimpet Sratong-on; Phetcharat Dhamma...; Kevin A. Tompkins; Paksinee Kamolrat...; Krisadi Phannarus; Thanaphum Osathanon; Chalida Nakalekha...
• Keywords: Periodontal fiber; Premolar; Elasticity; Mastication

PurposeThere are two commonly cited modulus of elasticity the human periodontal ligament (EPDL), i.e., 6.89 ✕ 10−5 GPa (E1) and 10−2 (E2), which exactly 1000-fold different from each other. This study aims to clarify ambiguity EPDL used for simulations determine a more accurate value first premolars using experimental simulation approaches.MethodsNumerical finite element analysis were performed analyze PDL deformation under an average Asian occlusal force. To confirm results, simple multi-component, true-scale 3D models premolar in simulations. Finally, compression test universal testing machine on specimens was conducted identify compressive premolars.ResultsThe results both revealed that E1 inaccurate, because it resulted excessive force, should not occur during mastication. Although E2 did lead deformation, obtained by error unit conversion with no scientific backing. In contrast, indicated 9.64 10−4 (E3). simulation, E3 cause deformation.ConclusionThe demonstrated values (E1 E2) incorrect. Based is proposed as premolars.Clinical significanceThe would contribute precise reliable FEA provide better understanding stress distribution dental materials, will be beneficial precision dentistry, orthodontics restoration designs.