We characterized and imaged dental calculus using swept-source optical coherence tomography (SS-OCT). The refractive indices of enamel, dentin, cementum, were measured as 1.625 ± 0.024, 1.534 0.029, 1.570 0.021, 2.097 0.094, respectively. Dental leads strong scattering properties, thus, the region can be identified from enamel with SS-OCT imaging. An extracted human tooth is covered gingiva tissue an in vitro sample for tomographic

Abstract: Human mesenchymal stem cells (hMSCs) can differentiate into of connective tissue lineages, including cartilage. To overcome the limiting autogenous chondrocyte populations available in cartilage repair, various methods have been developed to maximize chondrogenesis hMSCs vitro, most which use derived from primary culture. In this study, we compared immortalized embedded collagen gel those grown pellet The scaffolds expressed more glycosaminoglycan than Real‐time reverse...

Vertical root fracture (VRF) is a complication in endodontically treated teeth. This study aimed to assess the clinical outcomes of treatment 6 VRF teeth with intentional replantation and fragment bonding 4-methacryloxyethyl trimellitate anhydride/methyl methacrylate-tri-n-butyl borane (4-META/MMA-TBB) resin. A series complete (one incisor, one canine, premolar, 3 M) were through 4-META/MMA-TBB included patients man 5 women; mean age, 44 ± 8 years). All had bucco-lingual direction tooth...

Chronic fatigue root fracture describes a in non-root canal treated (non-RCT) tooth. This study aimed to report the incidence and contributing factors of non-RCT teeth with chronic Taiwanese population. cross-sectional included extracted at Taipei Veterans General Hospital Taiwan between 2018 2019. The reasons for extractions were recorded vertical horizontal fractures (VRF HRF). Comparisons clinical VRF HRF performed by chi-square or Fisher exact test, where appropriate. Of 4207 examined,...

Stains produced by bacteria or those found in blood and food byproducts accumulate highly porous caries lesions. They can interfere with accurate diagnosis the selective removal of carious tissue during cavity preparations. Short-wavelength infrared (SWIR) imaging studies have shown that stain molecules do not absorb light beyond 1200 nm. The objective this study was to image affected infected dentin atSWIR wavelengths. Sections 3 mm thickness were cut from extracted teeth deep dentinal...

Abstract During the treatment of periodontitis, removal dental calculus is essential but still tricky despite developments several imaging modalities. In this research, we propose a novel approach to provide an intuitive guidance, automatically detect present subgingival calculus, and identify site lesion in optical coherence tomography images based on convolutional neural network model class activation maps technique. Our result shows good visualizations both B‐scan volumetric view. We...

Effective evaluation of students' self-assessment ability is crucial. This study was to develop a standardized 3D printed teaching model accompanied by structured scoring rubrics for preclinical endodontic training, appraise ability, and evaluate their perceptions the training system.The printing designed house central incisor. Forty-four undergraduate dental students were enrolled performance self-assessed also rated assistant tutor using 3 including access cavity, mechanical preparation,...

The aim of this clinical study was to compare the diagnostic performance dual short wavelength infrared (SWIR) occlusal transillumination and reflectance multispectral imaging with conventional visual assessment radiography for caries detection on premolars scheduled extraction orthodontics reasons. Polarized light microscopy (PLM) micro-computed tomography (microCT) performed after tooth were used as gold standards. custom-fabricated probe 3D-printed system employed a SWIR camera...

The aim of this study was to develop a clinical SWIR reflectance handpiece assess the activity lesions on occlusal surfaces. time-resolved reflectivity 10 active and arrested caries extracted teeth monitored at 1470 nm using benchtop system modified prototype during forced air drying. presence highly mineralized surface layer measured with microcomputed tomography (microCT) used indicate lesion activity. Multiple kinetic parameters were from acquired time versus intensity dehydration curves...

Robotic technologies are becoming increasingly popular in dentistry due to the high level of precision required delicate dental procedures. Most robots available today designed for implant surgery, helping dentists accurately place implants desired position and depth. In this paper, we introduce DentiBot, first robot specifically endodontic treatment. The DentiBot is equipped with a force torque sensor, as well string-based Patient Tracking Module, allowing real-time monitoring file contact...

Due to the precise manipulations required in dental surgery, robotic technologies have been applied dentistry. So far, most robots are designed for implant helping dentists accurately place desired position and depth. This paper presents DentiBot, first robot endodontic treatment. Without visual feedback, DentiBot is integrated with a force torque sensor monitor contact between root canal file. Additionally, implemented force-guided alignment file feedrate control autonomously adjust...