Effect of different lateral occlusion schemes on peri-implant strain: A laboratory study
AuthorLo, J; Abduo, J; Palamara, J
Source TitleThe journal of advanced prosthodontics
PublisherKOREAN ACAD PROSTHODONTICS
AffiliationMelbourne Dental School
Document TypeJournal Article
CitationsLo, J., Abduo, J. & Palamara, J. (2017). Effect of different lateral occlusion schemes on peri-implant strain: A laboratory study. JOURNAL OF ADVANCED PROSTHODONTICS, 9 (1), pp.45-51. https://doi.org/10.4047/jap.2017.9.1.45.
Access StatusOpen Access
PURPOSE: This study aims to investigate the effects of four different lateral occlusion schemes and different excursions on peri-implant strains of a maxillary canine implant. MATERIALS AND METHODS: Four metal crowns with different occlusion schemes were attached to an implant in the maxillary canine region of a resin model. The included schemes were canine-guided (CG) occlusion, group function (GF) occlusion, long centric (LC) occlusion, and implant-protected (IP) occlusion. Each crown was loaded in three sites that correspond to maximal intercuspation (MI), 1 mm excursion, and 2 mm excursion. A load of 140 N was applied on each site and was repeated 10 times. The peri-implant strain was recorded by a rosette strain gauge that was attached on the resin model buccal to the implant. For each loading condition, the maximum shear strain value was calculated. RESULTS: The different schemes and excursive positions had impact on the peri-implant strains. At MI and 1 mm positions, the GF had the least strains, followed by IP, CG, and LC. At 2 mm, the least strains were associated with GF, followed by CG, LC, and IP. However, regardless of the occlusion scheme, as the excursion increases, a linear increase of peri-implant strains was detected. CONCLUSION: The peri-implant strain is susceptible to occlusal factors. The eccentric location appears to be more influential on peri-implant strains than the occlusion scheme. Therefore, adopting an occlusion scheme that can reduce the occurrence of occlusal contacts laterally may be beneficial in reducing peri-implant strains.
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