The effect of different implant impression splinting techniques and time on the dimensional accuracy: An in vitro study

Rutkūnas, Vygandas; Bilius, V.; Simonaitis, Tomas; Auškalnis, Liudas; Jurgilevicius, J.; Akulauskas, Mykolas

doi:10.1016/j.jdent.2022.104267

Cited by 12 publications

(8 citation statements)

References 31 publications

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“…74,75 The material selected (plaster, auto-or lightpolymerizing resin, polyvinyl siloxane occlusal registration material, or printed device) to connect ISBs may distort the ISB position due to the polymerization shrinkage of the material. 75 Additionally, limited data is available regarding the accuracy of the calibrated splinting framework technique (IOSFix; IOSFix) 76 or the reverse impression method; 77 moreover, its accuracy is unknown. Studies are recommended to assess the accuracy of the complete-arch intraoral digital scans obtained by using the described calibrated framework and the reverse impression method.…”

Section: Discussionmentioning

confidence: 99%

“…Additionally, the selection of an ISB splinting method should be considered carefully 74,75 . Limited studies have directly compared the accuracy outcomes of different splinting methods so it is unclear what the best method is for maximizing intraoral scanning accuracy based on the IOS selected 74,75 . The material selected (plaster, auto‐ or light‐polymerizing resin, polyvinyl siloxane occlusal registration material, or printed device) to connect ISBs may distort the ISB position due to the polymerization shrinkage of the material 75 .…”

Section: Discussionmentioning

confidence: 99%

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Intraoral digital implant scans: Parameters to improve accuracy

Revilla‐León,

Lanis,

Yilmaz

et al. 2023

Journal of Prosthodontics

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PurposeTo report the means to maximize the predictability and accuracy of intraoral digital implant scans through the evaluation of operator and patient related factors.Materials and MethodsCollection of published articles related to factors that can decrease the scanning accuracy of intraoral digital implant scans was completed in 4 data sources: MEDLINE, EMBASE, EBSCO, and Web of Science. All studies related to variables that can influence the accuracy of intraoral digital implant scans obtained by using intraoral scanners (IOSs) were considered. These variables included ambient lighting, scanning pattern, implant scan body (ISB) design, techniques for splinting ISBs, arch location, implant position and inter‐implant distance.ResultsAmong operator‐related factors, ambient lighting conditions, scanning pattern, and ISB design (material, geometry, and retention design) can impact the accuracy of intraoral digital implant scans. It is unclear the optimal ISB for maximizing the IOSs accuracy; however, polymer ISB can wear with multiple reuse and sterilization methods. Among patient‐related factors, additional variables should be considered, namely arch (maxillary vs mandibular arch), implant position in the arch, inter‐implant distance, implant depth, and angulation.ConclusionsAmbient lighting conditions should be established based on the IOS selected to optimize the accuracy of intraoral digital implant scans. The optimal scanning pattern may vary based on the IOS, clinical situation, and the number of implants. The optimal ISB design may vary depending on the IOS used. Metallic implant scan bodies are preferred over polymer ISB designs to minimize wear due to multiple use and sterilization distortion. Among patient‐related factors, additional variables should be considered namely the arch scanned, implant position in the arch, inter‐implant distance, implant depth and angulation. The impact of these factors may vary depending on the IOS selected.This article is protected by copyright. All rights reserved

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Intraoral digital implant scans: Parameters to improve accuracy

Revilla‐León,

Lanis,

Yilmaz

et al. 2023

Journal of Prosthodontics

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“…Pattern Resin LS and Durallay are both acrylic resins con-taining polymethyl methacrylate. 22,23 However, Pattern Resin LS has the dimethyl-p-toluidine tertiary amine in its matrix, which acts by promoting an increase in the number of linear and three-dimensional bridges of the polymeric chains, thus forming a greater number of branched chains that, consequently, increase the mechanical rigidity of the material and decrease its polymerization shrinkage. 22 This finding corroborates the findings of Gibbs et al 2014, 24 who reported significantly lower polymerization shrinkage values for conventional acrylic resins when compared with acrylic gel resins.…”

Section: Discussionmentioning

confidence: 99%

The Technique and Material Used to Join Transfers Affect the Accuracy and Final Fit of Implant-Supported Prostheses—In Vitro Study

Mariotto,

Detogni,

Persh

et al. 2024

Eur J Dent

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Objectives This study evaluated the linear dimensional change of polymerization of three materials and two techniques of the union of molding transfers for implant-supported prostheses used in the open-tray technique. Materials and Methods A nylon maxilla-shaped matrix was made, two osseous integrated implants were installed, and, over these two, straight conical mini-pillars were installed. Open-tray impression transfers were attached to the mini-pillars, and a silicone guide was made to standardize the connections between the transfers. The samples were divided into six groups (n = 20): PA (Pattern Resin LS, chemically activated acrylic resin in the single step technique); DU (Durallay, chemically activated acrylic resin in the single step technique); BI (Protemp4, bisacrylic resin in the single step technique); PAC (Pattern Resin LS in sectioning and joining of segments technique); DUC (Durallay, in sectioning and joining of segments technique); and BIC (Protemp4, in sectioning and joining of segments technique). The linear dimensional change values that occurred among these transfers were measured in a profile projector (VB300; Starret) coupled to the Quadra Check device, with a resolution of 0.001 mm, performed by a single calibrated operator. Statistical Analysis Data were submitted to a two-way analysis of variance and Tukey's test (p < 0.01). Results Statistically significant mean values were found in all comparisons. The PA showed the lowest mean values (µm) of linear dimensional change, both in the single-step technique and in the sectioning and joining technique, in the following order: BI 255.73 (3.81), DU 173.75 (2.30), PA 95.97 (3.20), BIC 23.82 (1.71), DUC 20.85 (2.53), and PAC 13.27 (2.09). The single-step technique showed the worst results, regardless of the material. Conclusion The sectioning and joining technique reduced the dimensional change in all materials, and the Pattern Resin LS showed the lowest shrinkage mean values, followed by Durallay and Protemp4.

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“…Next, the scan bodies were disconnected, and impression copings were attached. They were splinted with a light curing material (IndividoLux, VOCO) intraorally 9 and the passive fit of the splint was evaluated 10 . The analogues were attached to the splinted impression copings, and the control model was fabricated.…”

Section: Clinical Reportmentioning

confidence: 99%

Virtual planning, guided surgery, and digital prosthodontics in the treatment of extended mandible chondrosarcoma

Zaleckas,

Vitosyte,

Gendviliene

et al. 2024

Journal of Prosthodontics

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Chondrosarcoma is among the most common primary bone tumors in adults. In the mandible, chondrosarcoma is a very uncommon malignant cartilage‐producing tumor. This case report shows how virtual planning combined with other digital technologies may improve masticatory function rehabilitation in patients with enlarged mandibular chondrosarcoma. The present study reports a case of a 52‐year‐old male patient who was initially diagnosed with a mandible chondroma, which was successfully excised with no evidence of malignant transformation. Nevertheless, the patient's symptoms recurred after ten years, and a subsequent diagnosis of mandible chondrosarcoma was established, prompting the need for subtotal mandible resection and reconstruction with a fibula‐free flap. Following a healing period, the patient underwent dental implant surgery to restore the mandibular dental arch, which was performed utilizing computer‐aided design and computer‐aided manufacturing technology, with fully guided implant placement facilitated by virtual planning. In this case report, the implant position data merging process is described from the digital impression and control model to ensure optimal passive fit of the full‐arch zirconia prosthesis and discuss the importance of occlusal adjustments to avoid technical and biological complications. Virtual planning and digital technologies are crucial for the effective management of mandibular defects, allowing for accurate treatment and complete restoration of mandibular function. Their use leads to improved patient outcomes and quality of life. As technology advances, their importance in treating complex medical conditions is only expected to grow.This article is protected by copyright. All rights reserved

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The effect of different implant impression splinting techniques and time on the dimensional accuracy: An in vitro study

Cited by 12 publications

References 31 publications

Intraoral digital implant scans: Parameters to improve accuracy

Intraoral digital implant scans: Parameters to improve accuracy

The Technique and Material Used to Join Transfers Affect the Accuracy and Final Fit of Implant-Supported Prostheses—In Vitro Study

Virtual planning, guided surgery, and digital prosthodontics in the treatment of extended mandible chondrosarcoma

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