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Non-splinted single tooth restorations based on short implants in maxilla a follow-up study.
EAO Online Library. Hadzik J. Oct 9, 2018; 232669; P-PA - 24
Jakub Hadzik
Jakub Hadzik
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Short dental implants are considered to be an alternative method of treatment to a maxillary sinus elevation and bone augmentation procedure at the sites of reduced alveolar ridge height.**When the era of dental implantology began, clinicians started using certain guidelines associated with natural teeth for the implant supported fixed crowns. It was taken for granted, that the length of an implant in alveolar bone (the equivalent of root) should exceed the length of the superstructureThe aim of the study was to determine if implant length and the crown to implant (c i) ratio influences the implant stability and the loss of the marginal bone level (MBL). The research group was n=30 patients who had single tooth implant placed in maxilla, two types of implants were used- short (L6Ø4mm) and regular (L11Ø4mm). The evaluation, was based on patient’s clinical (Periotest) and radiological examination (CBCT, periapical radiograph). Radiographs were taken initially and after 36 months to assess the crown-implant ratio and to measure MBL. The secondary implant stability was measured with Periotest after 36month. The evaluation of implant stability after 36 months showed good result of secondary stability in both groups (0,93±3,39 PTV and 1,0±2,7 PTV for short and regular implants). The MBL loss was low (0,22±0,46mm and 0,34±0,24mm for short and regular implants) and similar in both groups. No statistically significant correlation between c i ratio and the secondary stability was found. No significant correlation was observed for the c i and marginal bone loss. Short implants can be successfully used to support single crowns. Clinical performance of short implants is comparable to regular implants. No negative influence of the c i ratio on the MBL and implant stability was found
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