+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Prospective clinical trial evaluating a new implant system for implant survival, implant stability and radiographic bone changes



Prospective clinical trial evaluating a new implant system for implant survival, implant stability and radiographic bone changes



Clinical Implant Dentistry and Related Research 15(1): 15-21



There are a few prospective studies reporting on new implant systems. When a new implant is brought to market, prospective trials should be carried out to determine the predictability of that system. This prospective study evaluates implant survival, Resonance Frequency Analysis (RFA), and crestal bone level changes for a new implant system (Neoss System, Bimodal surface, Neoss Ltd, Harrogate, UK). Seventy-six patients, 38 females (age ranging from 23 to 57 years) and 38 males (ranging in age from 17 to 85 years) received 100 Neoss implants. Patients were consecutively enrolled in the study if they were missing one or more teeth in either arch, or a single tooth was scheduled for removal and immediate implant replacement. Evaluated implants were 4, 4.5, or 5 mm wide and were 7, 9, 11, 13, or 15 mm long. A one-stage approach was followed. At first stage and prior to healing abutment placement RFA measurements were taken. Measurements were retaken at second stage. Fifty-one implants were placed for restoration of single missing teeth and 49 were for short span implant bridges. The cumulative survival rate at 1- to 2-year interval was 93%. Average initial RFA measurement for all implants was 72.06, while the average final score was 72.58. These changes were not statistically significant. Changes in RFA scores for maxillary implants were insignificant. Forty-two paired mandibular RFA measurements were evaluated. Initial and final mean mandibular RAF measurements were 73.65 (SD 9.203) and 77.186 (SD 6.177), respectively. These changes were statistically significant (p = .02). Sixty-four paired radiographs were available for evaluation. Between examinations, there was an average -0.6 mm of bone loss, which was statistically significant (p = .03). On average, 4.0-mm-wide implants lost 0.1 mm of bone when compared with 5-mm-wide implants. These differences were insignificant (p = .86). Bone loss was adjusted for implant length, and tooth position and there were small, but clinically insignificant changes. Five-millimeter-wide implants lose 0.2 mm more than 4.0-mm-wide implants (p = .7). Maxillary incisors lose the least amount of bone 0.152 (p = .33). The implants tested in this study had initially high RAF readings, indicating good primary stability. RFA readings for implants placed in the mandible improved from baseline and the changes were statistically significant. Marginal bone levels revealed clinically insignificant bone loss from implant installation to second stage. Loss of seven implants with initially high RFA readings is surprising.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 055235881

Download citation: RISBibTeXText

PMID: 21223489

DOI: 10.1111/j.1708-8208.2010.00333.x


Related references

Analysis of marginal bone loss and implant stability quotient by resonance frequency analysis in different osteointegrated implant systems. Randomized prospective clinical trial. Medicina Oral, Patologia Oral Y Cirugia Bucal 24(2): E260-E264, 2019

A new wide-diameter bone-anchored hearing implant-prospective 1-year data on complications, implant stability, and survival. Otology and Neurotology 35(7): 1238-1241, 2015

Clinical and radiographic performance of delayed-immediate single-tooth implant placement associated with peri-implant bone defects. A 2-year prospective, controlled, randomized follow-up report. Journal of Clinical Periodontology 32(5): 480-487, 2005

Undersized implant site preparation to enhance primary implant stability in poor bone density: a prospective clinical study. Journal of Oral and Maxillofacial Surgery 69(12): E506-E512, 2012

Influence of Implant-Prosthetic Connection on Peri-Implant Bone Loss: A Prospective Clinical Trial with 2-Year Follow-up. International Journal of Oral and Maxillofacial Implants 2019, 2019

Influence of cortical bone thickness and implant length on implant stability at the time of surgery--clinical, prospective, biomechanical, and imaging study. Bone 37(6): 776-780, 2005

Implant survival and radiographic analysis of proximal bone levels surrounding a contemporary dental implant. Implant Dentistry 20(2): 146-156, 2011

Relationship of three-dimensional bone-to-implant contact to primary implant stability and peri-implant bone strain in immediate loading: microcomputed tomographic and in vitro analyses. International Journal of Oral and Maxillofacial Implants 28(2): 367-374, 2014

Diagnosis of implant stability and its impact on implant survival: a prospective case series study. Clinical Oral Implants Research 21(3): 255-261, 2010

Relationship between the CT Value and Cortical Bone Thickness at Implant Recipient Sites and Primary Implant Stability with Comparison of Different Implant Types. Clinical Implant Dentistry and Related Research 18(1): 107-116, 2017

Effect of implant surface properties on peri-implant bone healing: implant stability and microcomputed tomographic analysis. International Journal of Oral and Maxillofacial Implants 27(1): 77-83, 2012

Impacts of 3D bone-to- implant contact and implant diameter on primary stability of dental implant. Journal of the Formosan Medical Association 116(8): 582-590, 2017

Effect of two designs of implant-supported overdentures on peri-implant and posterior mandibular bone resorptions: a 5-year prospective radiographic study. Clinical Oral Implants Research 28(10): E184-E192, 2016

A comparative study of crestal bone loss and implant stability between osteotome and conventional implant insertion techniques: a randomized controlled clinical trial study. Clinical Implant Dentistry and Related Research 15(3): 350-357, 2014

Peri-implant Soft Tissue Stability After Single Implant Restorations Using Either Guided Bone Regeneration or a Connective Tissue Graft: A Randomized Clinical Trial. International Journal of Periodontics and Restorative Dentistry 37(3): 413-421, 2018