Clinical accuracy and reproducibility of virtual interocclusal records

Abdulateef, Saraa; Edher, Faraj; Hannam, A.G.; Tobias, David L.; Wyatt, Chris

doi:10.1016/j.prosdent.2019.11.014

Cited by 42 publications

(40 citation statements)

References 22 publications

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“…A cross-over clinical trial by Lee et al comparing single implant restorations fabricated with conventional and digital techniques showed a comparable level of accuracy for both techniques [ 13 ]. Several studies have evaluated the accuracy of virtual interocclusal registration records for quadrant virtual casts, showing clinically acceptable results [ 30 , 31 ]. However, to the authors’ knowledge, none of them have looked into the occlusal accuracy of digitally mounted casts, specifically via quadrant scans and printed models.…”

Section: Discussionmentioning

confidence: 99%

An In-Vitro Evaluation of Articulation Accuracy for Digitally Milled Models vs. Conventional Gypsum Casts

2022

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With the advent of a digital workflow in dentistry, the inter-occlusal articulation of digital models is now possible through various means. The Cadent iTero intraoral scanner uses a buccal scan in maximum intercuspation to record the maxillomandibular relationship. This in-vitro study compares the occlusion derived from conventionally articulated stone casts versus that of digitally articulated quadrant milled models. Thirty sets of stone casts poured from full arch polyvinyl siloxane impressions (Group A) and thirty sets of polyurethane quadrant models milled from digital impressions (Group B) were used for this study. The full arch stone casts were hand-articulated and mounted on semi-adjustable articulators, while the digitally derived models were pre-mounted from the milling center based on the data obtained from the buccal scanning procedure. A T-scan sensor was used to obtain a bite registration from each set of models in both groups. The T-scan data derived from groups A and B were compared to that from the master model to evaluate the reproducibility of the occlusion in the two groups. A statistically significant difference of the contact region surface area was found on #11 of the digitally articulated models compared to the master. An analysis of the force distribution also showed a tendency for a heavier distribution on the more anterior #11 tooth for the digitally articulated models. Within the limitations of this study, the use of a digitally articulated quadrant model system may result in a loss of accuracy, in terms of occlusion, the further anteriorly the tooth to be restored is located. Care must be taken to consider the sources of inaccuracies in the digital workflow to minimize them for a more efficient and effective restorative process.

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Section: Discussionmentioning

confidence: 99%

An In-Vitro Evaluation of Articulation Accuracy for Digitally Milled Models vs. Conventional Gypsum Casts

2022

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“…The literature does not yet define a gold standard for assessing the precision and accuracy of virtual occlusal records, as different studies use different forms of assessment that are not comparable with each other (Abdulateef et al, 2019;Iwaki et al, 2013;DeLong et al, 2007;Ren et al, 2020;Solaberrieta et al, 2015;Wong et al, 2018;). The consulted studies demonstrated two main forms of assessment of the accuracy and precision of virtual occlusal records.…”

Section: Discussionmentioning

confidence: 99%

“…One of them is the alignment of the models by the visual method, however, it is a technique with uncertain precision that demands a lot of time (DeLong et al, 2002;Sweeney et al, 2015). The most common method is the use of bite scanning function of scanner systems, in which the buccal face of the teeth of the upper and lower arch in intercuspation are scanned, usually in the position of maximum intercuspation (MIP), and through the best fit algorithm, the alignment of the virtual models is done (Abdulateef et al, 2019;Seo et al, 2019;Sweeney et al, 2015;Wong et al, 2018).…”

Section: Literature Reviewmentioning

confidence: 99%

Virtual occlusal record: a literature review about the digital method

Queiroz

Dallazen

Tsutsumi

et al. 2021

RSD

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To produce prostheses through the digital flow, it is essential to transfer the correct patient’s interocclusal relationship to the digital software program, enabling the articulation of virtual models. Therefore, the aim of this study was to carry out a narrative literature review to describe and discuss aspects related to the virtual occlusal record realization, as well as its precision and accuracy in different clinical situations. Searches for scientific publications were performed in different databases and only articles in English related to the topic were selected. Different methods for the alignment of virtual models are described in the literature, the main one being the scanning of the patient in occlusion, usually in a position of maximum intercuspation. However, this technique may demonstrate disagreement with the patient's actual occlusal relationship due to several factors, and therefore studies were carried out to verify the precision and accuracy of these records. Most studies use plaster models and industrial scanner to capture the record, with few studies performed with intraoral scanner in patients. Despite the various scanner systems available and the different ways of evaluating them, in general, the studies show an adequate precision and accuracy of virtual occlusal records of dentate models. However, the absence of dental elements is related to the lower accuracy of these records, it being necessary to establish an appropriate method of scanning for these clinical situations.

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“…They concluded that MIP could be achieved independent from time of the day or subject position. Abdulateef et al 60 in a clinical study on 10 subjects, evaluated the accuracy and reproducibility of virtual interocclusal records with PVS interocclusal records in MIP and reported comparable clinically acceptable results. However, they observed undetected interocclusal contacts and occlusal perforations between the opposing virtual casts in MIP.…”

Section: Focus Question 2: What Effect Do Different Recording Materiamentioning

confidence: 96%

What Materials and Reproducible Techniques May Be Used in Recording Centric Relation? Best Evidence Consensus Statement

Kattadiyil

Alzaid

Campbell

2021

Journal of Prosthodontics

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Purpose The purpose of this Best Evidence Consensus Statement was to evaluate the existing literature relative to two focus questions: What are the techniques used and their reproducibility in recording centric relation (CR) in a dentate and partially dentate population and what effect do different recording materials have on the reproducibility of CR? Materials and Methods Keywords used in the initial search were: CR, interocclusal records, CR accuracy, CR reproducibility, and CR technique. The search was then limited to Systematic Reviews, Randomized Controlled Studies, Meta‐analyses, and Clinical Trials. Results Initial search related to the selected search terms resulted in more than 3500 articles. When subsequent search was limited to Systematic Reviews, Randomized Controlled Studies, and Meta‐Analysis and Clinical Trials, this resulted in 291 articles selected for further analysis. Conclusions Techniques using chin point guidance, bimanual manipulation, power centric, Gothic arch tracing, leaf gauge, and anterior deprogramming devices to record CR can all be comparable in precision and clinical accuracy in regards to clinical relevance. Practitioner experience and familiarity with a particular technique is critical for accuracy when recording CR. Polyvinyl siloxane and polyether consistently performed better in the broad range of studies on recording materials. Virtual capture of CR could serve as a comparable recording medium but requires further clinical study.

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Clinical accuracy and reproducibility of virtual interocclusal records

Cited by 42 publications

References 22 publications

An In-Vitro Evaluation of Articulation Accuracy for Digitally Milled Models vs. Conventional Gypsum Casts

An In-Vitro Evaluation of Articulation Accuracy for Digitally Milled Models vs. Conventional Gypsum Casts

Virtual occlusal record: a literature review about the digital method

What Materials and Reproducible Techniques May Be Used in Recording Centric Relation? Best Evidence Consensus Statement

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