Publications by authors named "Chih-Te Liu"
Background/purpose: As science and technology continue to advance, the utilization of intraoral scanners (IOSs) has become increasingly popular in the orthodontic workflow. The aim of this study was to discuss whether the degree of crowded arches affects scan accuracy.
Materials And Methods: Three different crowding levels of dental models (model MI: mild, model MO: moderate, and model SE: severe) were scanned using both an IOS and desktop scanner.
Article Synopsis
- The study aimed to validate the accuracy of full-arch digital impressions using two intraoral scanners, Trios 3 and Trios 4, under clinical conditions by comparing different scanning strategies.
- A dental model with 28 teeth was used as a reference to evaluate the trueness of the scans, employing three strategies: the manufacturer's original method (O), a half segmental range (OH), and a third quarter segmental range (TQ).
- Results indicated that strategy TQ provided the best accuracy for both scanners, suggesting that clinicians should choose scanning strategies accordingly for enhanced precision in their work.
Background/purpose: The simulated color of restorations plays an important role in improving patient satisfaction. The aim of this study was to test a new intelligent colorimetric solution using the Advanced Reflectionless Technology (ART) monitor and compare them using commercially available shade systems.
Materials And Methods: Six participants' right maxillary central incisors were tested with three devices, including the AUO Display Plus (Group A), a Canon single-lens reflex camera with eLAB's polar eyes filter (Group E), and the VITA Easyshade V (Group V).
Background/purpose: Implant stability is crucial for successful osseointegration. Marginal bone level is considered an important indicator of long-term implant success and stability. The purposes of this study were to investigate 1) the effect of age, gender, bone density, implant length, and implant diameter on insertion torque (IT), primary implant stability quotient (ISQ), and secondary ISQ, 2) the impact of age, gender, bone density, implant length, implant diameter, IT, and ISQ on marginal bone loss (MBL).
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- The study compared the outcomes of immediate implant placement with immediate provisionalization (Ipro) versus without Ipro in patients with failed maxillary anterior teeth.
- It involved 70 patients divided into two groups, measuring implant stability, marginal bone loss, survival rates, and patient satisfaction over a year.
- Results showed no differences in bone loss or survival rates, but Group A (with Ipro) had higher patient satisfaction and better implant stability at multiple time points after surgery.
Background/purpose: The optimal strategy for scanning removable partial dentures remains unknown. This study investigated scanning strategies for patients with a maxillary Kennedy Class I arch as well as the measurement deviations of three scanning strategies.
Materials And Methods: A standard maxilla model was positioned with a holder in a dental chair to simulate a natural patient position and posture.
Article Synopsis
- Clenching is a dental issue that can harm teeth and dental prostheses, and while CAD/CAM technologies create strong and high-quality prosthetics, they still show damage post-clenching.* -
- Researchers utilized Abaqus software to simulate various ceramic assembly models under stress tests, considering factors like loading, material type, and layer thickness across 96 models.* -
- The study found that a four-layered ceramic assembly design, particularly using IPS e.max CAD and Vita Enamic, can effectively mimic natural teeth and possibly improve the durability of dental prostheses.*
Background/purpose: Cone beam computed tomography (CBCT) is frequently used in dental diagnosis and treatment. Comparative studies of the effects of CBCT on implant navigation, however, are still limited. The objective of this study was to evaluate whether the computed tomography images of the four commercial brands will affect the accuracy of the new version of IRIS implant navigation system.
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