Implant stability measurement of delayed and immediately loaded implants during healing.
- 14 July 2004
- journal article
- Published by Wiley in Clinical Oral Implants Research
- Vol. 15 (5), 529-539
- https://doi.org/10.1111/j.1600-0501.2004.01042.x
Abstract
The purpose of the present study was (1) to measure the primary stability of ITI implants placed in both jaws and determine the factors that affect the implant stability quotient (ISQ) determined by the resonance frequency method and (2) to monitor implant stability during the first 3 months of healing and evaluate any difference between immediately loaded (IL) implants and standard delayed loaded (DL) implants. The IL and DL groups consisted of 18 patients/63 implants and 18 patients/43 implants. IL implants were loaded after 2 days; DL implants were left to heal according to the one-stage procedure. The ISQ was recorded with an Osstell® apparatus (Integration Diagnostics AB, Gothenburg, Sweden) at implant placement, after 1, 2, 4, 6, 8, 10 and 12 weeks. Primary stability was affected by the jaw and the bone type. The ISQ was higher in the mandible (59.8±6.7) than the maxilla (55.0±6.8). The ISQ was significantly higher in type I bone (62.8±7.2) than in type III bone (56.0±7.8). The implant position, implant length, implant diameter and implant deepening (esthetic plus implants) did not affect primary stability. After 3 months, the gain in stability was higher in the mandible than in the maxilla. The influence of bone type was leveled off and bone quality did not affect implant stability. The resonance-frequency analysis method did not reveal any difference in implant stability between the IL and DL implants over the healing period. Implant stability remained constant or increased slightly during the first 4–6 weeks and then increased more markedly. One DL and IL implant failed; both were 8 mm long placed in type III bone. At the 1-year control, the survival rate of the IL and the DL implants was 98.4% and 97.7%, respectively. This study showed no difference in implant stability between the IL and DL procedures over the first 3 months. IL short-span bridges placed in the posterior region and full arch rehabilitation of the maxilla with ITI sandblasted-and-etched implants were highly predictable.Keywords
This publication has 38 references indexed in Scilit:
- Biological properties of acid etched titanium implants: Effect of sandblasting on bone anchorageJournal of Biomedical Materials Research Part B: Applied Biomaterials, 2003
- The anchorage of Brånemark and ITI implants of different lengths. I. An experimental study in the canine mandibleClinical Oral Implants Research, 2003
- A comparison between cutting torque and resonance frequency measurements of maxillary implants: A 20-month clinical studyInternational Journal of Oral & Maxillofacial Surgery, 1999
- Stability measurements of one-stage Brånemark implants during healing in mandibles: A clinical resonance frequency analysis studyInternational Journal of Oral & Maxillofacial Surgery, 1999
- A comparison between cutting torque and resonance frequency measurements of maxillary implants. A 20-month clinical studyInternational Journal of Oral & Maxillofacial Surgery, 1999
- The influence of simultaneous versus delayed placement on the stability of titanium implants in onlay bone grafts: A histologic and biomechanic study in the rabbitInternational Journal of Oral & Maxillofacial Surgery, 1999
- The influence of simultaneous versus delayed placement on the stability of titanium implants in onlay bone grafts. A histologic and biomechanic study in the rabbitInternational Journal of Oral & Maxillofacial Surgery, 1999
- Measurements of stability changes of titanium implants with exposed threads subjected to barrier membrane induced bone augmentation. An experimental study in the rabbit tibia.Clinical Oral Implants Research, 1997
- Implant‐retained mandibular overdentures with immediate loadingClinical Oral Implants Research, 1997
- Retrospective multicenter analysis of 3i endosseous dental implants placed over a five‐year periodClinical Oral Implants Research, 1996