Radiographic verification of implant abutment seating

Cameron, Stephen M.; Joyce, Anthony P.; Brousseau, J. S.; Parker, M. Harry

doi:10.1016/s0022-3913(98)70241-0

Cited by 25 publications

(35 citation statements)

References 4 publications

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“…For this examination, a periapical radiograph is recommended (10). The observation of the interfaces of prosthetic components in a periapical radiograph is considered to be reliable when the opposing surfaces are parallel to the x-ray beam, so that a vertical misfit can be detected (14,15). A misfit of 12 µm can be identified up to a five-degree angle and a misfit of 190 µm can be seen up to a 15-degree angle.…”

Section: Discussionmentioning

confidence: 99%

Technical complications with implant-supported dental prostheses

et al. 2014

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Section: Discussionmentioning

confidence: 99%

Technical complications with implant-supported dental prostheses

et al. 2014

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“…Radiographically, such detectable edges between the abutment and the head of the implant body diminish as the beam diverges. 5 This is why identifying a misfit on the radiograph becomes increasingly difficult as the beam divergence increases. Although this study examined the accuracy of fit assessment without controlling for tube angulation, Ormaechea et al 4 investigated the relationship of controlled radiographic tube angulation and IAJ gap assessment by clinicians in a laboratory setting.…”

Section: Discussionmentioning

confidence: 99%

“…Gap thicknesses of 50 μm and 100 μm were selected because previous studies indicated that clinicians had difficulty detecting an interface opening that ranged from 50 to 150 μm as the angulation of the radiographic tube head increased up to 20 degrees. 4,5 …”

Section: Methodsmentioning

confidence: 99%

“…4–6 When the relative position of the implant to the film and radiographic collimator (tube head) is evaluated, the position of the collimator to the implant has been shown to be more critical than the relative relationship of the film to the implant. 5 Moreover, clinicians routinely use the blurring or superimposition of the machined screw threads as a reference to discern radiographic tube misalignment; the diagnostic value of the radiographs is thus determined by the clarity of the threads on the film. However, because radiographic angulation can distort the crestal bone margin relative to the implant body while maintaining thread clarity, validating radiographs based on the presentation of implant threads is both inaccurate and subjective.…”

mentioning

confidence: 99%

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Assessing fit at the implant-abutment junction with a radiographic device that does not require access to the implant body

Lin¹,

Wadhwani²,

Cheng³

et al. 2014

The Journal of Prosthetic Dentistry

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Statement of problem Radiograph paralleling devices provide an excellent means of obtaining orthogonal radiographs for the evaluation of the fit of implant restorations. Unfortunately, the clinical applicability of such devices is a significant issue because access to the implant body must be obtained at each radiographic appointment. Purpose The purpose of the study was to investigate whether the fit or microgap at the implant-abutment junction could be more accurately and confidently assessed with a novel radiograph paralleling device that did not require access to the implant body once a proper registration index was made. Material and methods Microgaps of 0, 50, and 100 μm were introduced at the implant-abutment junction of a provisional implant crown in a manikin-typodont assembly. Dental assistants made 54 radiographs (18 per microgap) of the crown with and without a radiograph paralleling device; 9 clinicians then evaluated the standardized radiographs for the presence of misfit. The Cochran-Mantel-Haenszel test and the corresponding odds ratios were used to evaluate the effectiveness of the paralleling device in helping clinicians better assess misfit from the radiographs made. Results The use of the device led to a higher percentage of accuracy under all conditions (79.0% vs 70.4% at the 0-μm gap, 77.8% vs 16.1% at the 50-μm gap, and 100% vs 92.6% at the 100-μm gap); the improvement was statistically significant at the 50-μm gap (P<.001) and 100-μm gap (P=.049) but not at the 0-μm gap (P=.364). The odds ratio (95% confidence interval) of obtaining correct versus wrong answers with the device compared with without the device was 18.64 (7.94–43.77) at the 50-μm gap and 5.40 (0.25–114.25) at the 100-μm gap. Conclusions The study indicated that the paralleling device helped the clinician more accurately assess the implant-abutment junction with the 50- and 100-μm gaps.

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“…18 It was stated that a divergence of more than Ϯ10 degrees with the vertical plane resulted in missed open margins as large as 0.1 mm. 19 A less than optimal fit may result in bacterial aggregation, which leads to peri-implant inflammation.…”

Section: Discussionmentioning

confidence: 99%

Multiple Abutment Positional Guide

Carvalho

Ferreira²,

Barboza³

2009

Implant Dentistry

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Custom-made abutments are popular to correct malpositioned implants, enhance esthetics, and improve function. The implant abutment can be positioned in 6 or 12 different positions depending on the connection design. In addition, the number of positions increases exponentially when >1 abutment is to be placed. This report presents the fabrication and use of a multiple abutment positional guide. This device reduces the chair time for construction of implant-supported prostheses by seating the abutments within their correct locations.

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Radiographic verification of implant abutment seating

Cited by 25 publications

References 4 publications

Technical complications with implant-supported dental prostheses

Technical complications with implant-supported dental prostheses

Assessing fit at the implant-abutment junction with a radiographic device that does not require access to the implant body

Multiple Abutment Positional Guide

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