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Feng Y, Ma S, Zhong S, Niu L, Feng Z. A method to improve positioning of denture teeth on denture bases for CAD-CAM complete dentures: A dental technique. J Prosthet Dent 2024; 132:46-50. [PMID: 37414596 DOI: 10.1016/j.prosdent.2023.05.017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 05/03/2023] [Accepted: 05/03/2023] [Indexed: 07/08/2023]
Abstract
In the digital workflow of complete denture fabrication, one solution for producing computer-aided design and computer-aided manufacturing dentures has been to mill the denture teeth and base separately and then bond them together. The correct bonding of the denture teeth and base is important to reproduce the designed occlusion in the definitive prosthesis. A novel technique is described to assist in the accurate positioning of denture teeth on the denture base by constructing auxiliary positioning slots on the denture base and auxiliary positioning posts on the denture teeth. The technique can assist in accurately assembling CAD-CAM milled complete dentures and may shorten chairside time by reducing clinical occlusal adjustment.
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Affiliation(s)
- Yue Feng
- Graduate student, State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Sai Ma
- Lecturer, State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Sheng Zhong
- Technical Engineer, State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Digital Dentistry Center, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Lina Niu
- Professor, State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Zhihong Feng
- Professor, State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Prosthodontics, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China.
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Nrecaj A, Takeshita L, Moreira YM, Schimmel M, Leles CR, Srinivasan M. Reliability between the two-colour chewing gum and the gummy-jelly tests used for the assessment of masticatory performance. J Oral Rehabil 2024; 51:954-961. [PMID: 38379391 DOI: 10.1111/joor.13665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 01/13/2024] [Accepted: 02/05/2024] [Indexed: 02/22/2024]
Abstract
OBJECTIVE This study aimed to evaluate the reliability of two methods used to assess masticatory performance and attempt to correlate them to achieve interchangeability between the methods. METHODS Twelve healthy dentate volunteers (men = 6, women = 6; mean age = 28.3 ± 4.1) with no known dental or medical pathologies were requested to participate in this study. Each participant completed three masticatory performance assessments, including two two-colour mixing-ability tests using chewing-gums (CG: gum#1 and gum#2) and the gummy-jelly (GJ) test. For each method, participants created five samples each (total = 15 measurements per participant, gum#1 = 5, gum#2 = 5, GJ = 5). For the gum#1 and gum#2 methods, the predetermined chewing cycles were fixed at 10, 15, 20, 25 and 30 cycles, and for the GJ method, the time duration was fixed at 10, 15, 20, 25 and 30 s. The parameter measures were submitted to Z-score transformation, and Bland-Altman plots were generated to graphically compare the differences between two techniques against their means. Additionally, mountain plot was used to assess the cumulative distribution of measurement error between the methods. RESULTS A total of 180 measurements were recorded. There were significant correlations between the number of chewing cycles/chewing time and masticatory performance using the gum#1 (r = -.753; p < .001), gum#2 (r = -.838; p < .001) and GJ (r = .730). When all tests were considered together for each method, significant correlations were found (p < .001). A descriptive range of mean values aiming to produce reference value ranges for predictive purposes was achieved considering the interchangeably among the methods [CG = GJ (VoH-mg = dL): 10 cycle = 10 s: 0.329 = 110; 15 cycles = 15 s: 0.177 = 164; 20 cycles = 20 s: 0.130 = 205; 25 cycles = 25 s: 0.086 = 200; 30 cycles = 30 s: 0.077 = 267]. CONCLUSION The strong correlations and high consistency between the two masticatory performance methods found in this study conclude that the two assessment methods are reliable and interchangeable. Further evaluations are warranted to arrive at a conversion formula for translation of the results between the two methods.
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Affiliation(s)
- Arnold Nrecaj
- Clinic of General-, Special Care- and Geriatric Dentistry, Center for Dental Medicine, University of Zurich, Zurich, Switzerland
| | - Lisa Takeshita
- Clinic of General-, Special Care- and Geriatric Dentistry, Center for Dental Medicine, University of Zurich, Zurich, Switzerland
| | | | - Martin Schimmel
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
- Division of Gerodontology and Removable Prosthodontics, University of Geneva, Geneva, Switzerland
| | - Cláudio Rodrigues Leles
- Clinic of General-, Special Care- and Geriatric Dentistry, Center for Dental Medicine, University of Zurich, Zurich, Switzerland
- School of Dentistry, Federal University of Goias, Goiania, Brazil
- Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Murali Srinivasan
- Clinic of General-, Special Care- and Geriatric Dentistry, Center for Dental Medicine, University of Zurich, Zurich, Switzerland
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Jafarpour D, Haricharan PB, de Souza RF. CAD/CAM versus traditional complete dentures: A systematic review and meta-analysis of patient- and clinician-reported outcomes and costs. J Oral Rehabil 2024. [PMID: 38797954 DOI: 10.1111/joor.13738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 04/02/2024] [Accepted: 05/04/2024] [Indexed: 05/29/2024]
Abstract
STATEMENT OF PROBLEM Computer-aided design and manufacturing (CAD/CAM) have been increasingly used to enhance the patient and clinician experiences with removable complete dentures (CDs). Yet, evidence from systematic reviews is lacking to validate the clinical significance of these digital prostheses. PURPOSE The purpose of this systematic review was to compare CAD/CAM CDs with the traditional ones in terms of patient and clinician-reported outcomes, post-insertion adjustment visits and costs. MATERIALS AND METHODS An electronic search of four databases [Medline (Ovid), Embase, Scopus and Cochrane CENTRAL; last update: May 2022] was performed to retrieve clinical studies comparing CAD/CAM and traditional CDs. Two independent reviewers screened the articles, extracted data (methods and outcomes) and assessed risk of bias of the included studies. The following outcomes underwent meta-analysis (random-effects model): overall patient and clinician satisfaction, oral health-related quality of life (OHRQoL), number of post-insertion adjustment visits, as well as laboratory and total costs. RESULTS This review included 11 studies. Meta-analysis revealed that CAD/CAM CDs are comparable to the traditional CDs in terms of overall patient satisfaction and OHRQoL. Clinician-reported data depended on the manufacturing technique: whereas milled CDs performed better than traditional CDs in terms of clinician satisfaction and number of adjustments, 3D printed and traditional CDs were similar. Fabrication of CAD/CAM CDs required significantly less laboratory and overall costs than the traditional CDs. CONCLUSIONS There is some evidence showing that CAD/CAM CDs are at least comparable to traditional CDs. Further well-designed randomized clinical trials are needed to evaluate the performance of specific CAD/CAM approaches for manufacturing CDs, however.
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Affiliation(s)
- Dana Jafarpour
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, Quebec, Canada
| | | | - Raphael Freitas de Souza
- Faculty of Dental Medicine and Oral Health Sciences, McGill University, Montreal, Quebec, Canada
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Maniewicz S, Imamura Y, El Osta N, Srinivasan M, Müller F, Chebib N. Fit and retention of complete denture bases: Part I - Conventional versus CAD-CAM methods: A clinical controlled crossover study. J Prosthet Dent 2024; 131:611-617. [PMID: 36116950 DOI: 10.1016/j.prosdent.2022.07.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 07/14/2022] [Accepted: 07/15/2022] [Indexed: 11/16/2022]
Abstract
STATEMENT OF PROBLEM Clinical evidence is sparse on whether dentures fabricated by computer-aided design and computer-aided manufacturing (CAD-CAM) methods afford superior fit and retention when compared with those fabricated conventionally. PURPOSE The purpose of this clinical controlled crossover study was to evaluate the peak retention force and fit of CAD-CAM manufactured (3D printed and milled) maxillary complete denture bases and conventional heat-polymerized bases (control). MATERIAL AND METHODS Twenty participants with edentulous maxillary arches were recruited. Impressions were made with a border-molded custom tray, and the resulting definitive cast was scanned. The conventional base was manufactured on the definitive cast with a hook and a 45-degree platform with a central notch and 2 lateral notches. The scan of the definitive cast was used for the fabrication of a milled and a printed base. The platform and hook position on the conventional base were transferred digitally to the milled and printed bases. All bases were scanned. A traction dynamometer was orientated into the notches, and retention was evaluated in the post dam and tuberosity areas. Scans were imported into a comparison software program which matched scans to their corresponding reference and performed a 3-dimensional comparison. The Friedman and Wilcoxon tests were used to compare between groups (confidence interval: 95%, α=.05). RESULTS Nineteen participants with a mean ±standard deviation age of 64.1 ±14.7 years completed all clinical sessions. No significant difference in peak retention was measured between milled (MB1), printed (PB1), and conventional (CB) bases in the post dam (CB: 12.44 ±9.62 N, PB1: 16.08 ±15.28 N, MB1: 14.52 ±17.07 N) and right tuberosity area (CB: 8.99 ±7.82 N, PB1: 11.28 ±9.57 N, MB1: 11.99 ±12.10 N). In the left tuberosity area, peak retention was lower for CB (10.03 ±8.39 N) than PB1 (14.98 ±14.72 N) and MB1 (13.55 ±15.53 N; P=.05). Compared with the definitive cast, the fit of the conventional base (0.18 ±0.01 mm) was closer than the printed (0.21 ±0.03 mm) and milled bases (0.21 ±0.02 mm) (P<.001). CONCLUSIONS The CD bases manufactured by CAD-CAM techniques provided retention and fit similar to that of conventionally manufactured bases and can therefore be considered suitable techniques.
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Affiliation(s)
- Sabrina Maniewicz
- Research and Teaching Fellow, Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland.
| | - Yoshiki Imamura
- Research and Teaching Fellow, Division of Fixed Prosthodontics, School of Dentistry, Meikai University, Saitama, Japan; Research and Teaching Fellow, Department of Geriatric Dentistry, School of Dentistry, Showa University, Tokyo, Japan
| | - Nada El Osta
- Professor, Department of Prosthodontics and Cranio-Facial Research Laboratory, Faculty of Dental Medicine, Saint Joseph University of Beirut, Beirut, Lebanon; Lecturer, Center for Research in Clinical Odontology, University of Clermont Auvergne, Clermont-Ferrand, France
| | - Murali Srinivasan
- Professor, Clinic of General-, Special care and Geriatric Dentistry, Center of Dental Medicine, University of Zurich, Zurich, Switzerland; Research and Teaching Fellow, Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
| | - Frauke Müller
- Professor, Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland; Professor, Division of Geriatrics, Department of Rehabilitation and Geriatrics, University Hospitals of Geneva, Thônex, Switzerland
| | - Najla Chebib
- Research and Teaching Fellow, Division of Gerodontology and Removable Prosthodontics, University Clinics of Dental Medicine, University of Geneva, Geneva, Switzerland
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Jurado CA, Azpiazu-Flores FX, Fu CC, Rojas-Rueda S, Guzman-Perez G, Floriani F. Expediting the Rehabilitation of Severely Resorbed Ridges Using a Combination of CAD-CAM and Analog Techniques: A Case Report. MEDICINA (KAUNAS, LITHUANIA) 2024; 60:260. [PMID: 38399547 PMCID: PMC10890117 DOI: 10.3390/medicina60020260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2023] [Revised: 01/29/2024] [Accepted: 01/31/2024] [Indexed: 02/25/2024]
Abstract
With the life expectancy increasing, there is a growing need for prosthetic dental treatments to restore the oral health, function, and quality of life of edentulous patients. Presently, only a few articles are available describing the oral rehabilitation of patients with severely resorbed ridges with milled complete dentures. This clinical case report provides a straightforward protocol consisting of a combination of analog and digital techniques for the rehabilitation of edentulous patients with severely resorbed ridges with milled fixed and removable complete dentures. This technique permits the minimization of the number of appointments, improves patient comfort, allows for the digital archiving of important clinical data, and permits the manufacture of prostheses with improved mechanical properties. These favorable outcomes were achieved by using the patient's existing PMMA complete denture as a custom tray for a final impression with light-bodied Polyvinylsiloxane. Subsequently, the resulting models were digitized, and a digital complete denture was designed and manufactured in an expedited manner using CAD-CAM techniques. Therefore, this case report highlights the potential of CAD/CAM technology to predictably restabilize oral functions and improve patients' quality of life.
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Affiliation(s)
- Carlos A. Jurado
- Department of Prosthodontics, College of Dentistry and Dental Clinics, The University of Iowa, Iowa City, IA 52242, USA
| | - Francisco X. Azpiazu-Flores
- Department of Restorative Dentistry, Gerald Niznick College of Dentistry, University of Manitoba, Winnipeg, MB R3E 3N4, Canada
- Center for Implant, Esthetic, and Innovative Dentistry, Department of Prosthodontics, Indiana University School of Dentistry, Indianapolis, IN 46202, USA
| | - Chin-Chuan Fu
- Department of Restorative Dentistry, University of Alabama at Birmingham School of Dentistry, Birmingham, AL 35233, USA
| | | | - Gerardo Guzman-Perez
- Department of Periodontology, Centro Educative Multidisciplinario en Rehabilitation Oral (CEMRO), Morelia 58880, Mexico
- Department of Periodontology, Quetzalcoatl University, Irapuato 36615, Mexico
| | - Franciele Floriani
- Department of Prosthodontics, College of Dentistry and Dental Clinics, The University of Iowa, Iowa City, IA 52242, USA
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Iwaki M, Kanazawa M, Soeda Y, Hada T, Komagamine Y, Minakuchi S. Effect of digital complete dentures manufactured using the custom disk method on masticatory function. Heliyon 2024; 10:e23938. [PMID: 38192789 PMCID: PMC10772253 DOI: 10.1016/j.heliyon.2023.e23938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/14/2023] [Accepted: 12/15/2023] [Indexed: 01/10/2024] Open
Abstract
Statement of problem The effect of using the custom disk method (CDM) for fabricating digital dentures on patients' masticatory function should be studied to support its use in clinical practice. Purpose To investigate the effect of digital dentures fabricated using CDM on patients' masticatory function. Material and methods This single-center prospective clinical study included 20 patients with edentulous maxillary and mandibular arches who used a complete denture. The digital impression and complete denture manufacturing procedures using CDM have already been reported by Kanazawa et al. (2018) [32] and Soeda et al. (2022) [18] Thedigital dentures fabricated with CDM were delivered to the participants, and periodic adjustments were made until the patient could use the denture without pain. A color-changeable chewing gum, two types of gummy jellies that can evaluate the masticatory function, and pressure-sensitive sheets were used to evaluate the participants' masticatory function at baseline, 1 month, and 6 months following adjustment of the new digital complete dentures fabricated with CDM. These masticatory function values had already been measured in the previous conventional dentures and were recorded as baseline values. Results The study participants included 8 women and 12 men (mean age, 77.6 years). The color-changeable chewing gum analysis indicated that there was no significant improvement of masticatory function from baseline to 1 M (P = .083) and 6 M (P = .157).The gummy jelly analysis indicated no significant differences between the masticatory function baseline and 1 month (P = .387); however, a significant improvement was observed from baseline to 6 months (P = .020). Tests with Glucolum indicated a significant improvement from baseline to 1 month (P = .012) and 6 months (P = .003). The maximum bite force and occlusal contact area showed no significant difference at any time point. Conclusions Significant improvement in masticatory function was observed upon evaluation with gummy jelly and Glucolum 6 months after delivering the new digital complete dentures. Under limited conditions, the digital denture fabricated using CDM resulted in good recovery of the masticatory function in elderly edentulous patients. The present results combined with the cost-effectiveness and patient satisfaction associated with CDM indicate its clinical utility.
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Affiliation(s)
- Maiko Iwaki
- Digital Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Manabu Kanazawa
- Digital Dentistry, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yumika Soeda
- Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Tamaki Hada
- Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yuriko Komagamine
- Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shunsuke Minakuchi
- Gerodontology and Oral Rehabilitation, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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Tew IM, Soo SY, Pow EHN. Digitally versus conventionally fabricated complete dentures: A systematic review on cost-efficiency analysis and patient-reported outcome measures (PROMs). J Prosthet Dent 2023:S0022-3913(23)00711-4. [PMID: 38000966 DOI: 10.1016/j.prosdent.2023.10.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 10/27/2023] [Accepted: 10/27/2023] [Indexed: 11/26/2023]
Abstract
STATEMENT OF PROBLEM Reports on digitally fabricated complete dentures are increasing. However, comprehensive evidence-based research on their cost-efficiency and patient-reported outcome measures (PROMs) is lacking. PURPOSE The purpose of this systematic review was to compare the cost-effectiveness and PROMs between digitally and conventionally fabricated complete dentures. MATERIAL AND METHODS An electronic search of publications from 2011 to mid-2023 was established using PubMed/Medline, EBSCOhost, and Google Scholar. Retrospective, prospective, randomized controlled, and randomized crossover clinical studies on at least 10 participants were included. A total of 540 articles were identified and assessed at the title, abstract, and full article level, resulting in the inclusion of 14 articles. Data on cost, number of visits, patient satisfaction, and oral health-related quality of life were examined and reported. RESULTS The systematic review included 572 digitally fabricated complete dentures and 939 conventionally fabricated complete dentures inserted in 1300 patients. Digitally fabricated complete dentures require less clinical time with a lower total cost, despite higher material costs compared with the conventional fabrication technique. Digitally and conventionally fabricated complete dentures were found to have significant effects on mastication efficiency, comfort, retention, stability, ease of cleaning, phonetics, and overall patient satisfaction, as well as social disability, functional limitation, psychological discomfort, physical pain, and handicap. CONCLUSIONS Digitally fabricated complete dentures are more cost-effective than conventionally fabricated dentures. There are various impacts of conventionally and digitally fabricated complete dentures on PROMs, and they are not better than one another.
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Affiliation(s)
- In Meei Tew
- Lecturer, Department of Restorative Dentistry, Faculty of Dentistry, The National University of Malaysia, Kuala Lumpur, Malaysia
| | - Suet Yeo Soo
- Lecturer, Department of Restorative Dentistry, Faculty of Dentistry, The National University of Malaysia, Kuala Lumpur, Malaysia
| | - Edmond Ho Nang Pow
- Clinical Associate Professor, Division of Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong, PR China.
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Dib Zakkour S, Dib Zakkour J, Guadilla Y, Montero J, Dib A. Comparative Evaluation of the Digital Workflow and Conventional Method in Manufacturing Complete Removal Prostheses. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6955. [PMID: 37959552 PMCID: PMC10650844 DOI: 10.3390/ma16216955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 09/10/2023] [Accepted: 10/27/2023] [Indexed: 11/15/2023]
Abstract
The aging population in developed countries has increased the number of edentulous patients and, therefore, the need for prosthetic rehabilitation to improve their quality of life. Complete dentures are the main treatment option in these cases. The use of CAD/CAM (Computer Aided Design/Computer Aided Manufacturing) in dentistry has improved clinical protocols and outcomes, achieving a reduction in work time and economic costs for the patients. The main objective of this review was to compare the characteristics of conventional and digital dentures, attempting to determine whether the use of new technologies represents an improvement in the properties of removable complete dentures. A bibliographic review was carried out in the PubMed/MEDLINE, Cochrane Library, Scielo, and Embase databases. With the initial search, 157 articles were obtained. After applying the inclusion and exclusion criteria, 64 publications were selected for this bibliographic review. The different conclusions of the studies consulted were compared regarding fit and retention, fracture resistance, surface roughness, biocompatibility, and aesthetics, taking into account the different methods of prostheses fabrication. In general, digital prostheses have shown better mechanical properties and, consequently, better biocompatibility and aesthetics than conventional prostheses. However, the obtained results were very heterogeneous, preventing a supported conclusion.
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Affiliation(s)
| | | | - Yasmina Guadilla
- Dental Clinic of the Faculty of Medicine, University of Salamanca, 37008 Salamanca, Spain; (Y.G.); (J.M.); (A.D.)
| | - Javier Montero
- Dental Clinic of the Faculty of Medicine, University of Salamanca, 37008 Salamanca, Spain; (Y.G.); (J.M.); (A.D.)
| | - Abraham Dib
- Dental Clinic of the Faculty of Medicine, University of Salamanca, 37008 Salamanca, Spain; (Y.G.); (J.M.); (A.D.)
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Wang J, Wu YL, Ma J, Wu F, Li DH. A novel technique for implant-supported fixed complete rehabilitation based on a dynamic virtual patient. J Dent 2023; 137:104649. [PMID: 37574104 DOI: 10.1016/j.jdent.2023.104649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 07/28/2023] [Accepted: 08/01/2023] [Indexed: 08/15/2023] Open
Abstract
BACKGROUND A digital workflow for implant-supported fixed complete prostheses (ISFCP) using photogrammetry (PG), virtual articulator (VA), and virtual facebow (VF) data remains a challenge. METHODS The novel ISFCP technique included four steps: (1) formation of a dynamic virtual patient, (2) integration of PG data, (3) fabrication of a diagnostic ISFCP, and (4) fabrication of a definitive ISFCP and test of the deviation. RESULTS Dynamic virtual patients were formed by integrating PG, VA, and VF data. The cumulative root mean square deviation between the designed data and actual definitive prosthesis was 140.4 µm. CONCLUSIONS The novel technique for ISFCP fabrication described in this paper can help optimise the clinical efficiency and quality of ISFCP but requires an initial learning curve. CLINICAL SIGNIFICANCE This technique provides a direct workflow, using PG, VA, and VF data, to fabricate ISFCP based on the provisional restoration.
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Affiliation(s)
- Jing Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Oral Implants, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Yu-Lu Wu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Dental Laboratory, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Jing Ma
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Dental Laboratory, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - Fan Wu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Oral Implants, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China
| | - De-Hua Li
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Oral Implants, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, PR China.
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Thu KM, Molinero-Mourelle P, Yeung AWK, Abou-Ayash S, Lam WYH. Which clinical and laboratory procedures should be used to fabricate digital complete dentures? A systematic review. J Prosthet Dent 2023:S0022-3913(23)00495-X. [PMID: 37689573 DOI: 10.1016/j.prosdent.2023.07.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 07/26/2023] [Accepted: 07/27/2023] [Indexed: 09/11/2023]
Abstract
STATEMENT OF PROBLEM Digital workflows for digital complete denture fabrication have a variety of clinical and laboratory procedures, but their outcomes and associated complications are currently unknown. PURPOSE The purpose of this systematic review was to evaluate the clinical and laboratory procedures for digital complete dentures, their outcomes, and associated complications. MATERIAL AND METHODS Electronic literature searches were conducted on PubMed/Medline, Embase, and Web of Science for studies published from January 2000 to September 2022 and screened by 2 independent reviewers. Information on digital complete denture procedures, materials, their outcomes, and associated complications was extracted. RESULTS Of 266 screened studies, 39 studies were included. While 26 assessed definitive complete dentures, 7 studies assessed denture bases, 2 assessed trial dentures, and 4 assessed the digital images only. Twenty-four studies used border molded impression technique, 3 studies used a facebow record, and 7 studies used gothic arch tracing. Only 13 studies performed trial denture placement. Twenty-one studies used milling, and 17 studies used 3D printing for denture fabrication. One study reported that the retention of maxillary denture bases fabricated from a border-molded impression (14.5 to 16.1 N) was statistically higher than the retention of those fabricated from intraoral scanning (6.2 to 6.6 N). The maximum occlusal force of digital complete denture wearers was similar across different fabrication procedures. When compared with the conventional workflow, digital complete dentures required statistically shorter clinical time with 205 to 233 minutes saved. Up to 37.5% of participants reported loss of retention and up to 31.3% required a denture remake. In general, ≥1 extra visit and 1 to 4 unscheduled follow-up visits were needed. The outcomes for patient satisfaction and oral health-related quality of life were similar between conventional, milled, and 3D-printed complete dentures. CONCLUSIONS Making a border-molded impression is still preferred for better retention, and trial denture placement is still recommended to optimize the fabrication of definitive digital complete dentures.
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Affiliation(s)
- Khaing Myat Thu
- Senior Research Assistant, Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Adminstrative Region, PR China
| | - Pedro Molinero-Mourelle
- Research Assistant, Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine University of Bern, Bern, Switzerland
| | - Andy Wai Kan Yeung
- Tutor in Oral and Maxillofacial Radiology, Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Adminstrative Region, PR China
| | - Samir Abou-Ayash
- Associate Professor, Department of Reconstructive Dentistry and Gerodontology, School of Dental Medicine, University of Bern, Bern, Switzerland
| | - Walter Yu Hang Lam
- Clinical Assistant Professor in Prosthodontics, Restorative Dental Sciences, Faculty of Dentistry, The University of Hong Kong, Hong Kong Special Adminstrative Region, PR China..
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Vivek SP, Jagdish SK, Murugesan K, Peter J, Arunkumar CS, Muthukumar B. Comparison of Masticatory Efficiency and Patient Satisfaction of Injection-Molded Conventional Complete Dentures and Biofunctional Prosthetic System Dentures: A Parallel Randomized Clinical Trial. Cureus 2023; 15:e42564. [PMID: 37637558 PMCID: PMC10460240 DOI: 10.7759/cureus.42564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2023] [Indexed: 08/29/2023] Open
Abstract
Introduction Complete loss of natural teeth severely compromises the masticatory efficiency of geriatric patients and directly affects their general health. Biofunctional prosthetic system (BPS) has been developed as an alternate method of denture fabrication to match the higher expectations of patients. Studies comparing BPS dentures with injection-molded conventional complete dentures (IM-CCD) are lacking. Our study aimed to compare the masticatory efficiency and patient satisfaction of BPS dentures with IM-CCD. Methods This trial was designed as a randomized, prospective, single-center, double-blinded study with two parallel arms (BPS group and IM-CCD group) having an equal allocation (1:1). Completely edentulous patients aged 45-80 who visited our outpatient department between January and August 2018 were screened and enrolled according to our inclusion and exclusion criteria. Random sequence generation was done using an online randomization program. Allocation concealment was done using sequentially labeled opaque envelopes. The participants and the outcome assessors were blinded. A single operator performed all the clinical procedures in both groups under the guidance of the instructor. The age and gender of the patients were recorded for demographic data at baseline. Primary outcomes were assessed six weeks after denture insertion. The number of denture adjustments required during the first six weeks after denture delivery was recorded as the secondary outcome. Masticatory efficiency was evaluated by the volumetric single-sieve method. An abbreviated version of the Oral Health Impact Profile questionnaire for edentulous patients (OHIP-EDENT) was used for patient satisfaction scores. The total OHIP-EDENT score was calculated by adding all the responses to the 19 questions (ranging from 0 to 38). Individual domain scores were calculated by adding the response to all the questions in that domain. All the data obtained were tested for normality using the Kolmogorov-Smirnov test. Data were analyzed using either unpaired Student's T-test or Mann-Whitney U test for normal and non-normal data, respectively. The gender characteristics of the sample were compared using Chi-Square test. Results Two patients in the IM-CCD group and one patient in the BPS group were lost to follow-up. Hence only the secondary outcome data were analyzed for these patients. Primary outcome data of patients who were lost to follow-up were excluded from the analysis. No significant differences (p>0.05) were found between the two groups for age and gender characteristics of the samples. Masticatory efficiency for both peanut and carrot was found to be significantly higher (p<0.05) in the BPS group than in the IM-CCD group. No significant differences (p>0.05) in the mean scores were observed between the two groups for total OHIP-EDENT scores or the individual domain scores. No significant differences (p>0.05) were observed between the groups for the number of denture adjustments done. Conclusion Within the limitations of the trial, it can be concluded that the BPS dentures significantly improved the masticatory efficiency for both hard (carrots) and soft (peanuts) foods compared to the IM-CCD. However, there was no difference between the masticatory-related complaints domain scores between the two dentures. No significant differences were found between BPS dentures and IM-CCD with respect to overall patient satisfaction scores or post-insertion denture adjustments.
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Affiliation(s)
| | | | - Krishnan Murugesan
- Department of Prosthodontics and Implantology, SRM Dental College and Hospital, Chennai, IND
| | - John Peter
- Department of Prosthodontics and Implantology, SRM Dental College and Hospital, Chennai, IND
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Celik HK, Koc S, Kustarci A, Caglayan N, Rennie AE. The state of additive manufacturing in dental research - A systematic scoping review of 2012-2022. Heliyon 2023; 9:e17462. [PMID: 37484349 PMCID: PMC10361388 DOI: 10.1016/j.heliyon.2023.e17462] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 06/08/2023] [Accepted: 06/19/2023] [Indexed: 07/25/2023] Open
Abstract
Background/purpose Additive manufacturing (AM), also known as 3D printing, has the potential to transform the industry. While there have been advancements in using AM for dental restorations, there is still a need for further research to develop functional biomedical and dental materials. It's crucial to understand the current status of AM technology and research trends to advance dental research in this field. The aim of this study is to reveal the current status of international scientific publications in the field of dental research related to AM technologies. Materials and methods In this study, a systematic scoping review was conducted using appropriate keywords within the scope of international scientific publishing databases (PubMed and Web of Science). The review included related clinical and laboratory research, including both human and animal studies, case reports, review articles, and questionnaire studies. A total of 187 research studies were evaluated for quantitative synthesis in this review. Results The findings highlighted a rising trend in research numbers over the years (From 2012 to 2022). The most publications were produced in 2020 and 2021, with annual percentage increases of 25.7% and 26.2%, respectively. The majority of AM-related publications in dentistry research originate from Korea. The pioneer dental sub-fields with the ost publications in its category are prosthodontics and implantology, respectively. Conclusion The final review result clearly stated an expectation for the future that the research in dentistry would concentrate on AM technologies in order to increase the new product and process development in dental materials, tools, implants and new generation modelling strategy related to AM. The results of this work can be used as indicators of trends related to AM research in dentistry and/or as prospects for future publication expectations in this field.
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Affiliation(s)
- H. Kursat Celik
- Dept. of Agr. Machinery and Technology Engineering, Akdeniz University, Antalya, 07070, Turkey
| | - Simay Koc
- Dept. of Endodontics, Fac. of Dentistry, Akdeniz University, Antalya, Turkey
| | - Alper Kustarci
- Dept. of Endodontics, Fac. of Dentistry, Akdeniz University, Antalya, Turkey
| | - Nuri Caglayan
- Dept. of Mechatronics, Fac. of Engineering, Akdeniz University, Antalya, Turkey
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Da Silva TM, Immich F, De Araujo TS, Lund RG, Da Silva AF, Piva E, Da Rosa WLDO. Photosensitive resins used in additive manufacturing for oral application in dentistry: A scoping review from lab to clinic. J Mech Behav Biomed Mater 2023; 141:105732. [PMID: 36898354 DOI: 10.1016/j.jmbbm.2023.105732] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 01/21/2023] [Accepted: 02/11/2023] [Indexed: 03/05/2023]
Affiliation(s)
| | - Felipe Immich
- School of Dentistry, Federal University of Pelotas, RS, Brazil.
| | | | - Rafael Guerra Lund
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil.
| | - Adriana Fernandes Da Silva
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil.
| | - Evandro Piva
- Department of Restorative Dentistry, School of Dentistry, Federal University of Pelotas, Pelotas, RS, Brazil.
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Rezaie F, Farshbaf M, Dahri M, Masjedi M, Maleki R, Amini F, Wirth J, Moharamzadeh K, Weber FE, Tayebi L. 3D Printing of Dental Prostheses: Current and Emerging Applications. JOURNAL OF COMPOSITES SCIENCE 2023; 7:80. [PMID: 38645939 PMCID: PMC11031267 DOI: 10.3390/jcs7020080] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 04/23/2024]
Abstract
Revolutionary fabrication technologies such as three-dimensional (3D) printing to develop dental structures are expected to replace traditional methods due to their ability to establish constructs with the required mechanical properties and detailed structures. Three-dimensional printing, as an additive manufacturing approach, has the potential to rapidly fabricate complex dental prostheses by employing a bottom-up strategy in a layer-by-layer fashion. This new technology allows dentists to extend their degree of freedom in selecting, creating, and performing the required treatments. Three-dimensional printing has been narrowly employed in the fabrication of various kinds of prostheses and implants. There is still an on-demand production procedure that offers a reasonable method with superior efficiency to engineer multifaceted dental constructs. This review article aims to cover the most recent applications of 3D printing techniques in the manufacturing of dental prosthetics. More specifically, after describing various 3D printing techniques and their advantages/disadvantages, the applications of 3D printing in dental prostheses are elaborated in various examples in the literature. Different 3D printing techniques have the capability to use different materials, including thermoplastic polymers, ceramics, and metals with distinctive suitability for dental applications, which are discussed in this article. The relevant limitations and challenges that currently limit the efficacy of 3D printing in this field are also reviewed. This review article has employed five major scientific databases, including Google Scholar, PubMed, ScienceDirect, Web of Science, and Scopus, with appropriate keywords to find the most relevant literature in the subject of dental prostheses 3D printing.
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Affiliation(s)
- Fereshte Rezaie
- Department of Endodontic, Faculty of Dentistry, Tabriz University of Medical Sciences, Tabriz P.O. Box 5163639888, Iran
| | - Masoud Farshbaf
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz P.O. Box 5163639888, Iran
| | - Mohammad Dahri
- Research Center for Pharmaceutical Nanotechnology, Biomedicine Institute, Tabriz University of Medical Sciences, Tabriz P.O. Box 5163639888, Iran
| | - Moein Masjedi
- Department of Pharmaceutics, School of Pharmacy, Shiraz University of Medical Sciences, Shiraz P.O. Box 6468571468, Iran
| | - Reza Maleki
- Department of Chemical Technologies, Iranian Research Organization for Science and Technology (IROST), Tehran P.O. Box 33535111, Iran
| | - Fatemeh Amini
- School of Dentistry, Shahed University of Medical Sciences, Tehran P.O. Box 5163639888, Iran
| | - Jonathan Wirth
- School of Dentistry, Marquette University, Milwaukee, WI 53233, USA
| | - Keyvan Moharamzadeh
- Hamdan Bin Mohammed College of Dental Medicine (HBMCDM), Mohammed Bin Rashid University of Medicine and Health Sciences (MBRU), Dubai P.O. Box 505055, United Arab Emirates
| | - Franz E. Weber
- Center for Dental Medicine/Cranio-Maxillofacial and Oral Surgery, Oral Biotechnology and Bioengineering, University of Zurich, Plattenstrasse 11, CH-8032 Zurich, Switzerland
| | - Lobat Tayebi
- School of Dentistry, Marquette University, Milwaukee, WI 53233, USA
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Deng K, Chen H, Wang Y, Zhou Y, Sun Y. Evaluation of a novel 3D-printed custom tray for the impressions of edentulous jaws. J Dent 2022; 125:104279. [PMID: 36070825 DOI: 10.1016/j.jdent.2022.104279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 08/28/2022] [Accepted: 09/02/2022] [Indexed: 11/18/2022] Open
Abstract
PURPOSE The purpose of this study was to evaluate a novel 3D-printed custom tray for impressions of edentulous jaws, and to compare it with conventional impression trays. METHODS Fifteen edentulous patients were enroled to evaluate the accuracy and border extension of a novel custom tray in the shape of a complete denture. Four impressions were made for each patient. Impressions made using novel custom trays were considered the experimental group, impressions made using conventional custom trays were considered the control group, and impressions made using final dentures and non-pressure custom trays were considered the reference groups. The experimental and control groups were compared with the reference groups using three-dimensional (3D) comparison analysis, and the impressions were further divided into regions. The root mean square (RMS) value was calculated to analyse the differences in impression morphology. Additionally, the experimental and control groups were compared to analyse border extension at standard locations. RESULTS Compared to the final denture impression as a reference, the diagnostic denture impression (RMS:0.146 ± 0.024 mm) was closer to the reference than the conventional impression (RMS:0.176 ± 0.047 mm), with a significant difference only in the secondary stress-bearing area. The border extension of the diagnostic denture impression was slightly longer than the conventional impression; however, the difference was not statistically significant. CONCLUSIONS The impressions made using the novel custom tray were similar to those made with a definitive complete denture. However, no significant differences were noted when compared with the conventional impressions.
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Affiliation(s)
- Kehui Deng
- Center of Digital Dentistry, Peking University School and Hospital of Stomatology, Beijing, China; Faculty of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, China; National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & National Center of Stomatology & National Clinical Research Center for Oral Diseases & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health, Beijing, China
| | - Hu Chen
- Center of Digital Dentistry, Peking University School and Hospital of Stomatology, Beijing, China; National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & National Center of Stomatology & National Clinical Research Center for Oral Diseases & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health, Beijing, China
| | - Yong Wang
- Center of Digital Dentistry, Peking University School and Hospital of Stomatology, Beijing, China; National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & National Center of Stomatology & National Clinical Research Center for Oral Diseases & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health, Beijing, China
| | - Yongsheng Zhou
- Faculty of Prosthodontics, Peking University School and Hospital of Stomatology, Beijing, China; National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & National Center of Stomatology & National Clinical Research Center for Oral Diseases & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health, Beijing, China
| | - Yuchun Sun
- Center of Digital Dentistry, Peking University School and Hospital of Stomatology, Beijing, China; National Engineering Research Center of Oral Biomaterials and Digital Medical Devices & National Center of Stomatology & National Clinical Research Center for Oral Diseases & Beijing Key Laboratory of Digital Stomatology & Research Center of Engineering and Technology for Digital Dentistry of Ministry of Health, Beijing, China.
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Is the Number of Appointments for Complete Denture Fabrication Reduced with CAD-CAM? A Literature Review. PROSTHESIS 2022. [DOI: 10.3390/prosthesis4010010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/10/2022]
Abstract
One of the key arguments in favor of digitally produced complete dentures (CDs) is the requirement for less patient visits in comparison to the conventional workflow. However, it is not yet clear if this argument is accurate; nor, if indeed the insertion of the complete dentures is achieved in fewer appointments, how many are required. The purpose of this literature review was to investigate the reported number of required patient visits for the production of digitally fabricated CDs. An electronic search was performed in PubMed/MEDLINE using three groups of keywords: “complete dentures”, “CAD/CAM”, and “Appointments” with their alternative forms. Out of the initial 157 results, 36 articles were automatically selected utilizing exclusion keywords. After consensus between the two examiners, eight articles were finally analyzed and presented in a table. The majority (75%) of the reports came from institutions, and the average number of appointments up to complete denture insertion was 4.1, not always including try-in dentures. In this study, it can be concluded that, with a digital workflow, the insertion appointment is reached in fewer visits than the conventional five-visit procedure which is commonly taught in dental schools.
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