Survival analysis of wide dental implant: systematic review and meta‐analysis

Lee, Chun Teh; Chen, Ya Wei; Starr, Jacqueline R.; Chuang, Sung Kiang

doi:10.1111/clr.12730

Cited by 31 publications

(22 citation statements)

References 53 publications

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“…19,22 Greater diameter implants have a larger bone-to-implant contact area, higher resistance to fracture and higher initial stability, and create less stress in bone. 8,23 However, in the clinical setting, the use of wide implants is limited by the thickness of the residual alveolar ridge. Yu et al suggested that the implant diameter should be at least half the ridge width; however, narrower alveolar ridges can increase bone stress in narrow bone walls along the implant and may result in rapid bone resorption, which decreases the crown-root ratio and further aggravates the stress accumulation in the crestal bone.…”

Section: Discussionmentioning

confidence: 99%

Finite element analysis of stress distribution around a dental implant with different amounts of bone loss: An in vitro study

Jafarian¹,

Mirhashemi²,

Emadi³

2019

Dent. Med. Probl.

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Background. The choice between reducing the bone height and inserting a shorter implant with a greater diameter or a longer and narrower implant without altering the bone height is a challenge in clinical practice. Objectives. The purpose of this finite element analysis (FEA) was to compare the pattern and level of stress around implants with different lengths and diameters and with different amounts of bone loss, which changes the implant-crown ratio over time, depending on the available bone and the treatment modality. Material and methods. The FEA was carried out to evaluate the stress distribution in bone around 3.25 × 13 mm and 4 × 11 mm 3i implants, and 3.3 × 12 mm and 4.1 × 10 mm Straumann ® implants. A 3D segment of the mandible was reconstructed from a computed tomography image of the posterior mandible. Occlusal force was simulated by applying 200 N vertical and 40 N horizontal loads to the occlusal node at the center of the abutment. The pattern of stress distribution in bone was evaluated in 10 models for each implant, representing 0-9 mm of bone resorption. Results. The results showed that along with decreasing the implant insertion depth, and consequently the implant-crown ratio, the amount of stress in bone increased. The amount of stress increased with an increase in depth of bone loss in all models, but there was no significant change in the amount of stress in the first several millimeters of bone loss. Conclusions. The results suggest that in terms of stress distribution, it is better to reduce the bone height and insert shorter implants with a greater diameter than longer implants with a smaller diameter.

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Section: Discussionmentioning

confidence: 99%

Finite element analysis of stress distribution around a dental implant with different amounts of bone loss: An in vitro study

Jafarian¹,

Mirhashemi²,

Emadi³

2019

Dent. Med. Probl.

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“…11,12 However, the findings of the present systematic review should be analysed with caution due to the small number of randomized clinical trials included, which can be considered a limitation. In addition, other factors such as number/position, 14 connection type, 42 length/diameter of the implant, 43,44 loading protocol 45 and follow-up period 1 are considered as influencing factors; unfortunately, sub-analyses could not be performed to verify the influence of these variables in association with the attachment system. Further randomized clinical trials are needed to evaluate these factors in patients with a longer follow-up period.…”

Section: Discussionmentioning

confidence: 99%

Splinted and unsplinted overdenture attachment systems: A systematic review and meta‐analysis

Leão

Moraes

Vasconcelos

et al. 2018

J of Oral Rehabilitation

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Splinted and unsplinted overdenture attachment systems have unique advantages and disadvantages. The aim of the present systematic review was to determine the influence of splinted and unsplinted overdenture attachment systems on the marginal bone loss, prosthetic complications and implant survival rate. PubMed/MEDLINE, Scopus and Cochrane databases were searched for articles published up to October 2017, using the following search terms: "overdenture AND attachment OR overdenture AND bar OR overdenture splinted." The PICO question "Do splinted overdenture attachment systems promote better clinical results in comparison to unsplinted systems?" was evaluated. Eligible studies included randomized controlled clinical trials, prospective studies with at least 10 participants and a minimum follow-up of 6 months, and studies published in English that compared splinted and unsplinted attachment systems within the same study. The 95% confidence interval (CI) was considered for all outcomes analysed. After completion of the different steps in the article selection process, nine articles were included in the qualitative and quantitative analyses. A total of 984 implants were placed in 380 patients (mean age: 62.8 years). The meta-analysis demonstrated no statistically significant differences between splinted and unsplinted attachment systems with regard to marginal bone loss (P = .39; MD: -0.11; 95% CI: -0.37 to 0.14), complications (P = .31; RR: 1.26; CI: 0.80-1.99) and implant survival rate (P = .14; RR: 0.37% CI: 0.10-1.36). In addition, splinted and unsplinted overdenture attachment systems achieved similar results with regard to marginal bone loss, prosthetic complications and implant survival rate.

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“…8 Early studies reported failure rates as high as 20%, probably due to poorly understood indications, different surgical protocols, poor bone quality and the associated learning curve. [17][18][19] More recent prospective studies, however, reported a 97% cumulative survival rate after 5 years 20 and an overall mean cumulative bone loss of 0.57 mm after at least 1 year. 21 For immediate molar replacement, a wide diameter implant yields multiple advantages.…”

Section: Introductionmentioning

confidence: 99%

A retrospective study on ultra‐wide diameter dental implants for immediate molar replacement

Hattingh

Bruyn

Vandeweghe

2019

Clin Implant Dent Rel Res

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Background Although immediate implant placement for single rooted teeth is well documented, the prognosis of ultra‐wide implants in molar sockets lacks data. Purpose To evaluate the outcome of ultra‐wide implants, immediately placed in molar sockets. Materials and Methods Patients treated with immediate ultra‐wide diameter implants that have been in function for at least 40 months, were invited for a clinical evaluation. A radiograph was taken to measure marginal bone loss. Probing depths as well as plaque and bleeding scores were recorded at the implant and contralateral tooth. Crown and soft tissue dimensions were measured, and patients filled out an OHIP‐14 questionnaire. Results Eighty‐five out of 230 patients (37%) were evaluated. Twenty‐eight implants received a bone graft to fill the residual space. Average bone loss was 0.19 mm after a mean follow‐up of 67 months, with no significant changes over time (P = 0.170). There was no significant difference in bone loss between the maxilla and mandible (P = 0.797), male or female (P = 0.128), smoking and nonsmoking (P = 0.219), grafted and nongrafted sites (P = 0.098), or the different bio‐types (P = 0.404). The distal papillae were significantly higher if a contact point was present (P = 0.002). Plaque was more frequent at the contralateral tooth (P < 0.001), but more bleeding on probing was observed around the implants (P = 0.021). Overall, 63.5% of the patients experienced no problems at all. Conclusion Ultra‐wide diameter implants for immediate molar replacement demonstrate little bone loss and stable soft tissue conditions over a 4 to 7‐year period.

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Survival analysis of wide dental implant: systematic review and meta‐analysis

Cited by 31 publications

References 53 publications

Finite element analysis of stress distribution around a dental implant with different amounts of bone loss: An in vitro study

Finite element analysis of stress distribution around a dental implant with different amounts of bone loss: An in vitro study

Splinted and unsplinted overdenture attachment systems: A systematic review and meta‐analysis

A retrospective study on ultra‐wide diameter dental implants for immediate molar replacement

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