ArticleClinical oral investigations2023
Comparison of occlusal contact errors of 6 chairside CAD/CAM crowns: a self-controlled clinical study.
Article in Clinical oral investigations, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05346744 (Quantitative Clinical Evaluation of the Occlusal Contact Trueness Affected by Six Chairside CAD/CAM Ceramic Materials：a Self-control Study), which is not on this map. Cited by 6 papers.
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Quantitative Clinical Evaluation of the Occlusal Contact Trueness Affected by Six Chairside CAD/CAM Ceramic Materials：a Self-control Study
Who cites it
6 citing papers in PubMed, 8 citations in OpenAlex.
- Dimensional Accuracy and Adaptation of Monolithic Zirconia Crowns Fabricated by a Novel Material Jetting Technique: An In Vitro Study Based on Clinical Laboratory Data.International dental journal · 2026Article
- Contact Area Between 3D-Printed Silicone Implant and Nasal Bone as a Predictive Factor for Implant Deviation.Aesthetic plastic surgery · 2025Article
- Assessment of Occlusal Contacts Recorded with the Medit Intraoral Scanner vs. Exocad Software.Journal of clinical medicine · 2025Article
- Comparison of interference from eccentric movements of dental crowns fabricated via dynamic jaw motion tracking and conventional methods: a double-blind clinical study.The journal of advanced prosthodontics · 2025Article
- The effect of occlusal balance and prosthesis on occlusal function of patients after dental implant restoration.Heliyon · 2025Article
- Digital Protocol to Record Occlusal Analysis in Prosthodontics: A Pilot Study.Journal of clinical medicine · 2024Article
Corrections and comments
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectivesThe purpose of this self-controlled clinical study was to evaluate the trueness of occlusal contacts of chairside CAD/CAM crowns fabricated using different ceramic materials. MATERIALS AND
methodsTen volunteers (8 females, 2 males, average aged 20-30) were recruited in this study registered in the Clinical Trials Registry (#NCT05346744). After tooth preparation on tooth 36 or 46, an optical scan unit (CEREC Omnicam, Sirona Dental Systems, Germany) was utilized to perform the intraoral scanning. For each volunteer, 6 crowns were fabricated via the chairside CAD/CAM process (CEREC, Sirona Dental Systems, Germany) using the following materials: InCoris TZI (ZIR), Celtra Duo (CD), e.max CAD (EMA), UP.CAD (UP), Enamic (ENA) and Hyramic (HY). The microhardness of the milled surfaces was measured through a Vickers hardness Tester (HVS-50Z, Trojan, China). Together with the amount of occlusal adjustment, the occlusal contact trueness at both milling and postprocessing stages were quantitatively analyzed by using a high-precision scanner (ATOS, GOM Technologies, USA) and a reverse engineering software (Geomagic Control, 3D Systems, Rock Hill, SC). The times of chairside occlusal adjustment were also recorded. Data were analyzed by one-way analysis of variance (ANOVA) and ANOVA with randomized block design followed by Bonferroni test (p = 0.05).
resultsSignificant differences were found in surface microhardness of the materials tested (CD > EMA ~ UP > ENA > HY > ZIR, p < 0.05). Regarding the occlusal contact trueness at milling stage, ZIR showed the lowest (p < 0.05), while no significant difference was found among others (p > 0.05). At postprocessing stage, except for ENA, the occlusal contact trueness of ZIR was significantly lower than that of others (p < 0.05). As for occlusal adjustment amount, ZIR was lower than CD and ENA (p < 0.05). In addition, ENA, HY and ZIR required fewer times of occlusal adjustment than EMA, UP and CD.
conclusionsThe type of chairside CAD/CAM ceramic materials affected the occlusal contact trueness throughout the process of manufacturing and the amount of clinical occlusal adjustment as well. Zirconia exhibited the worst occlusal contact trueness at both milling and postprocessing stages, while the amount of occlusal adjustment was the least, which recommended the least occlusal compensation. CLINICAL RELEVANCE: For better trueness, different negative occlusal offsets are suggested to be applied in the design process, so as to suit the material of the restoration.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.