Searched for: person:it16
Full-mouth rehabilitation of a patient with implant-supported fixed dental prostheses using CAD-CAM frameworks [Case Report]
Turkyilmaz, Ilser; Feldman, Danielle Zoe; Suer, Berkay Tolga
Conventional complete denture wearers often complain of lack of stability and overall discomfort with their prostheses. The advent of dental implants and advanced prosthetic methods have greatly improved this struggle for edentulous patients. The utilisation of computer-aided design and computer-aided manufacturing (CAD-CAM) technology has only further enhanced the capabilities of dental practitioners to rapidly and accurately restore edentulism. This report details the advantages of using CAD-CAM technology compared to analogue methods for titanium framework design and fabrication. It discusses the decrease in framework distortions, ease of communication with laboratories, and amount of time saved from the implementation of this technology. The results of this clinical report suggest that fixed dental prostheses with titanium frameworks fabricated using the software and scanner presented in this report fit accurately and may be a viable option to restore edentulous arches.
PMID: 39726089
ISSN: 2050-1692
CID: 5768032
Restoratively-driven digital dental implant planning and its clinical execution
Lee, Sera; Turkyilmaz, Ilser; Suer, Berkay Tolga; Lam, Walter
PMID: 39726092
ISSN: 2050-1692
CID: 5768042
Imaging techniques in dental implant planning: Understanding the paradigm shift from periapical radiograph to cone beam computed tomography (CBCT)
Turkyilmaz, Ilser; Feldman, Danielle Zoe; Suer, Berkay Tolga
PMID: 39726087
ISSN: 2050-1692
CID: 5768022
Analysis of the effects of mesh reduction of digital files on the surface area and volume accuracy of complete dentures using an intraoral scanner
Turkyilmaz, Ilser; Abdullah, Johari Y; Wilkins, Gregory N; Bernardi, Sara; Varvara, Giuseppe
BACKGROUND:The purpose of this study was to determine the accuracy of an intraoral scanner to digitally duplicate complete dentures and analyze the effects of mesh reduction of digital files on the surface area and volume accuracy of complete dentures, in vitro. METHODS:A mandibular complete denture was scanned by a desktop scanner to create a digital STL reference file (control). Fifteen identical scans were created by using an intraoral scanner and exported as STL files (test group). These 15 files were saved at 100% of the original scan resolution then reduced to 75%, 50%, 25%, and 10% of their original quality. These 75 scans were statistically analyzed by calculating The Hausdorff Distance (HD) and Dice Similarity Coefficients (DSC) to assess the variation between the mean reduced intraoral scanner files test and the control desktop scanner file and eventual inconsistencies. The volumes of the reduced mesh files were also compared with the 100% resolution intraoral mesh files to evaluate precision and trueness of the intraoral scanner. RESULTS:Reduced mesh files of 10%, 25%, 50%, 75% of the original scan yielded a percentage similarity average of 99.7%, indicating a very high precision value for the intraoral scanner. Also, the volumes of each associated mesh reduction slightly decreased with non-statistically significant results. CONCLUSIONS:This study concluded that the chosen intraoral scanner for this study provided very high trueness (98.34%) and precision (99.7%), and also the volumes of reduced mesh files slightly decreased but were not statistically significant.
PMID: 39565339
ISSN: 2724-6337
CID: 5768062
Fabrication of three implant-supported crowns using a digital workflow: a case report
Turkyilmaz, Ilser; Winfree, Jessie; Reiss, Natalia; Suer, Berkay Tolga
Accurate working impression is an essential requirement for the fabrication of implant prosthesis, and digital impressions have recently become more popular. In this case report, a completely digital workflow is introduced for the fabrication of three single-unit screw-retained implant crowns on the posterior maxilla by a dental student, under supervision. This approach involved the use of an intraoral scanner to capture a digital impression of the three implants and their surrounding mucosa, the opposing arch, and occlusion. The use of intraoral scanners and digital impressions illustrated an efficient and patient-friendly method of capturing the necessary data to fabricate a well-fitted prothesis. The aim of this case report is to examine a fully digital approach in the production of multiple single-unit implant crowns.
PMID: 39404005
ISSN: 2050-1692
CID: 5711052
Effect of different implant locations and abutment types on stress and strain distribution under non-axial loading: A 3-dimensional finite element analysis
Sakar, Didem; Guncu, Mustafa Baris; Arikan, Hale; Muhtarogullari, Mehmet; Aktas, Guliz; Reiss, Natalia; Turkyilmaz, Ilser
BACKGROUND/PURPOSE/UNASSIGNED:Dental implants have been a popular treatment for replacing missing teeth. The purpose of this study was to investigate the impact of engaging (hexagonal) and non-engaging (non-hexagonal) abutments in various six-unit fixed prosthesis on the stress distribution and loading located in the implant neck, implant abutment, and surrounding bone. MATERIALS AND METHODS/UNASSIGNED:Three implants were digitally designed and inserted parallel to each other in edentulous sites of the maxillary right canine, maxillary right central incisor, and maxillary left canine. Titanium base engaging abutments, non-engaging abutments and connecting screws were designed. Five distinct models of 6-unit fixed dental prosthesis were created, each featuring different combinations of various abutments. Forces (45-degree angle) were applied to the prosthesis, allowing for the analysis of the stress distribution on the implant neck and abutments, and the maximum and minimum principal stress values on the cortical and trabecular bone. RESULTS/UNASSIGNED:Von Mises stress values and stress distributions located in the implant neck region due to the applied loading forces were analyzed. The overall stress values were highest while employing the hexagonal abutments. The maxillary left canine with a hexagonal abutment (model 5) reported the highest von mises value (64.71 MPa) while the maxillary right canine with a non-hexagonal abutment (model 4) presented lowest von mises value (56.69 MPa). CONCLUSION/UNASSIGNED:The results suggest that both the various abutment combinations (engaging and non-engaging) on five different models have a similar influence on the distribution of stress within the implant system.
PMCID:10829709
PMID: 38303808
ISSN: 2213-8862
CID: 5626782
Influence of the implant scan body modifications on trueness of digital impressions
Uzel, Sema Merve; Guncu, Mustafa Baris; Aktas, Guliz; Arikan, Hale; Reiss, Natalia; Turkyilmaz, Ilser
BACKGROUND/PURPOSE/UNASSIGNED:Effects of implant angulation on digital impression accuracy remain controversial. The purpose of this study was to assess the relationship between the alteration of implant scan bodies and the trueness of digital impressions. MATERIALS AND METHODS/UNASSIGNED:A maxillary typodont without the right premolars and first molar was scanned with a laboratory scanner and saved as a standard triangular language (STL) file. A model from the STL file was fabricated with a 3-dimensional printer. Two implants were placed into the first premolar and first molar sites of the model, followed by the insertion of two scan bodies onto the implants. These scan bodies were divided into four test groups, based on the surface modifications. A digital impression of each typodont was made with three different intraoral scanners. An abutment was digitally seated on each implant. 120 STL files (30 for each group) of the typodont with two implants and two corresponding abutments were used for statistical analysis. RESULTS/UNASSIGNED: < 0.05). CONCLUSION/UNASSIGNED:It has been concluded that the more adjustments made to the scan bodies, the greater the linear and angular deviations occur, compromising the trueness of the digital implant impression.
PMCID:10547997
PMID: 37799878
ISSN: 2213-8862
CID: 5741192
Maxillary rehabilitation of tetracycline-stained teeth with diastemas by using ceramic veneers and a digital workflow
Turkyilmaz, Ilser; Reiss, Natalia
PMCID:10316506
PMID: 37404610
ISSN: 2213-8862
CID: 5539632
Local anesthesia training with mixed reality advanced dental simulators
Turkyilmaz, Ilser; Reiss, Natalia
PMCID:10316471
PMID: 37404655
ISSN: 2213-8862
CID: 5539642
Analysis of the impact of various finish line designs and occlusal morphologies on the accuracy of digital impressions
Gunel, Aylin; Guncu, Mustafa Baris; Uzel, Sema Merve; Aktas, Guliz; Arikan, Hale; Reiss, Natalia; Turkyilmaz, Ilser
BACKGROUND/PURPOSE/UNASSIGNED:Recent advancements in dental technology has led clinicians to convert from traditional methods to digital workflows. The purpose of this study was to analyze the effect of various finish line designs and occlusal morphologies on the accuracy of digital impressions. MATERIALS AND METHODS/UNASSIGNED:Six maxillary molar crown preparations were designed by using a digital sculpting software program. The samples differed in finish line design and occlusal surface morphology. Three different finish line designs (shoulder, chamfer, and shoulder with internal round angle) and two different occlusal morphologies (sharp and rounded) were used, giving six groups. Using three different intraoral scanners, each group was scanned and compared with a reference scan obtained from an industrial scanner. The accuracy of each scan was studied, and the data were statistically analyzed. RESULTS/UNASSIGNED: < 0.05). CONCLUSION/UNASSIGNED:It has been suggested that chamfer finish line design and rounded occlusal anatomy may produce more accurate digital impression for single crown restorations.
PMCID:10316503
PMID: 37404659
ISSN: 2213-8862
CID: 5539652