{'fraction_non_alphanumeric': 0.02894736842105263, 'fraction_numerical': 0.021052631578947368, 'mean_word_length': 5.005263157894737, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Evaluation of a primary TMJ implant fixation using screws: a numerical study

The temporomandibular joint (TMJ) plays an important role in the correct functioning of the digestive system. Several diseases (cancer, trauma or fractures) can affect this joint, making its replacement compulsory. Arthroplasty involves the removal and replacements of the damaged joint by prosthetic materials, the main goals being to improve the mandible functions and reduce disability (Mercuri 2009). Owing to the complex geometries of the TMJ and to the muscular forces exerted on the mandible, the fixation must ensure implant stability of the implant, which is extremely important if the TMJ implant is to be successful (Van Loon et al. 1995; Mercuri et al. 2007; Mesnard and Ramos 2012). Although the TMJ is widely studied, the implant fixation remains controversial, because it is important to minimise changes in stresses and strains, compared with the natural joint (Chowdhury et al. 2011; Hsu et al. 2011). The aim of this study was to analyse the influences of screw fixations and their locations, in order to connect the mandible implant correctly.