{'fraction_non_alphanumeric': 0.011162790697674419, 'fraction_numerical': 0.0, 'mean_word_length': 4.977777777777778, '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}}
Holographic measurement on deformation of mandible with dental implants due to occlusion

To consider the dynamic response of implant bridge caused by occlusion, the deformation of the bridge and the near mandible subjected to occlusional force was measured by holographic interferometry. In the study, the mandibles of Japanese monkeys were used. A screw type ceramic implant was placed in the site of the second molar, when it was about one year since the mandibular first and second molars were extracted. An implant bridge was then fabricated and placed between the implant and the first and second premolars. After the mandibular bone was extracted, double exposure holographic interferograms were recorded under various loads for the mandible. It was found that the stress on the implant bridge concentrated on the mesial of the pontic when the vertical load was applied to the second premolar. This shows that the mandible near the implant receives most of stress and suffers frequent damage such as the bone resorption, when the loads were applied to its mesial side.