Objective:To investigate the effect of different stent oversize in thoracic endovascular aortic repair (TEVAR) on lumen remodeling of type B aortic dissection (TBAD).Methods:The clinical and follow-up data of 89 TBAD patients receiving TEVAR from Nov 2010 to Jun 2020 at Yantai Yuhuangding Hospital were retrospectively analyzed. According to the difference of proximal stent oversize, 89 patients were divided into: low oversize group (<10%, 47 cases) and high oversize group (≥10%, 42 cases). The changes of the normal vessel diameter and area at the proximal end of the stent and the long diameter, short diameter and area of the true/false lumen at the distal end of the stent at 3, 6, and 12 months after surgery and postoperative complications were analyzed.Results:The change of proximal vessel diameter with time in the low oversize group is smaller than that in the high oversize group ( P<0.05),and the change of the distal false lumen area of the stent in the low oversize group was greater than that in the high oversize group ( P<0.05). The high oversize group was prone to retrograde type A aortic dissection (RTAD) ( P<0.05). Conclusion:Low oversize stents are more conducive to the remodeling of the aortic lumen in the early and mid-term after TEVAR in TBAD patients.

Digital guided therapy (DGT) has been advocated as a contemporary computer-aided technique for treating endodontic diseases in recent decades. The concept of DGT for endodontic diseases is categorized into static guided endodontics (SGE), necessitating a meticulously designed template, and dynamic guided endodontics (DGE), which utilizes an optical triangulation tracking system. Based on cone-beam computed tomography (CBCT) images superimposed with or without oral scan (OS) data, a virtual template is crafted through software and subsequently translated into a 3-dimensional (3D) printing for SGE, while the system guides the drilling path with a real-time navigation in DGE. DGT was reported to resolve a series of challenging endodontic cases, including teeth with pulp obliteration, teeth with anatomical abnormalities, teeth requiring retreatment, posterior teeth needing endodontic microsurgery, and tooth autotransplantation. Case reports and basic researches all demonstrate that DGT stand as a precise, time-saving, and minimally invasive approach in contrast to conventional freehand method. This expert consensus mainly introduces the case selection, general workflow, evaluation, and impact factor of DGT, which could provide an alternative working strategy in endodontic treatment.
Humans ; Consensus ; Endodontics/methods* ; Tooth ; Printing, Three-Dimensional ; Dental Care ; Cone-Beam Computed Tomography ; Root Canal Therapy

The dental operative microscope has been widely employed in the field of dentistry, particularly in endodontics and operative dentistry, resulting in significant advancements in the effectiveness of root canal therapy, endodontic surgery, and dental restoration. However, the improper use of this microscope continues to be common in clinical settings, primarily due to operators' insufficient understanding and proficiency in both the features and established operating procedures of this equipment. In October 2019, Professor Jingping Liang, Vice Chairman of the Society of Cariology and Endodontology, Chinese Stomatological Association, organized a consensus meeting with Chinese experts in endodontics and operative dentistry. The objective of this meeting was to establish a standard operation procedure for the dental operative microscope. Subsequently, a consensus was reached and officially issued. Over the span of about four years, the content of this consensus has been further developed and improved through practical experience.
Humans ; Dentistry, Operative ; Consensus ; Endodontics ; Root Canal Therapy ; Dental Care