Analyzing the occlusion variation of single posterior implant–supported fixed prostheses by using the T-scan system: A prospective 3-year follow-up study

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Supply: The Journal of Prosthetic Dentistry
Partially edentulous patients who had received crowns that are single in the posterior area between December 2012 and December 2013 were enrolled. The participants failed occlusal assessments by using the T-Scan III program in 0.5, 3, 6, 12, 24, and 36 months following implant prosthesis delivery. The relative occlusal forces (ROFs) of implant prostheses, mesial adjoining teeth, and control natural teeth were listed, and implant prosthesis occlusion time markers were calculated. The paired t test was used to evaluate the augmentation prosthesis occlusion time ratios and ROFs of augmentation prostheses at two distinct times as a self-control. The gaps in ROFs between augmentation prostheses and restrain teeth at precisely exactly the identical participant in exactly the identical period were also analyzed by using a paired t test. The Pearson correlation coefficient was used to assess the statistical correlation between augmentation prosthesis occlusal force along with the implant prosthesis occlusion period ratio (α=.05).
Osseointegrated implants can be more prone to occlusal overloading due to the absence of tactile sensitivity that is restricted and the periodontal ligament. Yet, current evidence of this variation of implant-supported fixed prostheses is currently missing.

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Publication date: Available on Line 10 May 2019

Material and techniques

The objective of this clinical study was to analyze changes in occlusal force distribution and occlusal contact in only posterior enhancement that is fixed that is partial –supported prostheses.

Even the force and contact time of augmentation prostheses changed with time.


Thirty-seven posterior semi rigid augmentation –supported prostheses from 33 participants (18 women and 15 men aged 23.9 to 70 years) were followed up for 3 months to 36 months (mean: 31.4 weeks ). The ROFs of implant prostheses increased appreciably (P<.05) from 2 weeks (7.46 ±4.21%) to 3 months (9.87 ±6.79%), whereas those of control organic teeth decreased considerably (P<.05) out of 13.78 ±6.00% to 11.43 ±5.47 percent. The ROFs of augmentation prostheses continued to grow from 6 to 12 months and from 12 to 24 weeks, with major variations (P<.05). They were statistically similar to those of management teeth 12, 6, 24, and 36 months. Implant prosthesis occlusion time ratios also increased significantly between 2 weeks and 3 weeks and between 3 and 6 weeks (P<.05). No substantial differences were discovered between the other time points (P>.05).


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