Application of virtual implant restoration in oral implantology teaching / 中华医学教育探索杂志

This study uses "virtual implant" technology combined with PBL and CBL teaching methods to carry out oral implantology teaching with "restoration as the goal". By instructing students to collect preoperative data and compare actual postoperative data, the continuous cycle verification between problems, objectives, methods, and results is performed. The continuous cycle verification can improve the enthusiasm and initiative of students to learn oral implantology. At the same time, it can allow students to develop the thinking habit of understanding oral implantology with a holistic and whole-process concept and provide strong educational guidance for clinical medical students.

Demandas por Malpraxis en Distintas Etapas del Tratamiento en Implantología Oral: Una Revisión

RESUMEN: Las demandas por malpraxis en odontología se han incrementado en los últimos años, siendo la implantología una de las especialidades más litigadas. Estas demandas en su mayoría se han caracterizado por tener un carácter multifactorial, con errores reportados en cualquiera de sus fases diagnósticas, terapéuticas o de mantenimiento. El propósito de esta revisión fue establecer la etapa del tratamiento implantológico en la que más se realizaron demandas por malpraxis, estableciendo una categorización de los errores detectados y de los daños asociados a cada una de las fases que incluye el tratamiento de rehabilitación mediante implantes dentales. Se realizó una revisión con búsqueda sistemática de los últimos 10 años en las bases Pubmed, Scopus, Web of Science, SciELO, complementada con una búsqueda manual en revistas especializadas y en Google Scholar de artículos a partir de términos clave en idiomas español inglés y portugués. Se identificaron solo 3 artículos que cumplieron los criterios de selección, lo que afirma el concepto de escasa atención hacia esta eventualidad. Las demandas identificadas en esos reportes fueron analizadas sobre cuatro tipos de riesgo en implantología según la etapa del tratamiento en la que aparecen. La etapa quirúrgica fue identificada como la de mayor potencial de riesgo de originar eventos adversos y demandas asociadas. Se sugiere profundizar en los aspectos medicolegales propios y genéricos de la especialidad, como así también en el desarrollo de estrategias que prevengan sus eventos adversos y la judicialización asociada.

ABSTRACT: Dental malpractice claims have increased in recent years, and implantology is one of the most litigated specialties. Most of these claims have been characterized by having a multifactorial nature, with errors reported in any of their diagnostic, therapeutic or maintenance phases. The purpose of this review was to establish the stage of implant treatment in which the most malpractice claims were made, establishing a categorization of the errors detected and damages associated with each of the phases that includes rehabilitation treatment using dental implants. A review was carried out with a systematic search of the last 10 years in Pubmed, Scopus, Web of Science and SciELO databases, complemented with a manual search in specialized journals and in Google Academic, of articles from key words in Spanish, English and Portuguese languages. Only 3 articles were identified that met the selection criteria, which affirms the concept of scant attention given to this eventuality. The claims identified in these reports were analyzed on four types of risk in implantology according to the stage of treatment in which they appear. The surgical stage was identified as the one with the highest risk potential of causing adverse events and associated demands. It is suggested to deepen the specific and generic medico-legal aspects of the specialty, as well as in the development of strategies to prevent adverse events and the associated litigation.

Relationships among the periodontal biotype characteristics in the maxillary anterior / 华西口腔医学杂志

OBJECTIVE@#To explore the correlation among gingival thickness (GT), underlying alveolar bone thickness (BT), and other periodontal biotype characteristics in the maxillary anterior.@*METHODS@#A total of 40 young volunteers with healthy periodontal were involved in this research. The periodontal probe was previously used to divide the gingiva from thick to thin. Two records were measured by cone beam CT (CBCT) GT, which was measured at the cement-enamel junction level; and BT, which was measured at 3 locations: 1, 3, 5 mm below the alveolar crest. Oral and gypsum measurements were used to analyze the associations of the crown width/crown length ratio (CW/CL), the keratinized mucosa width (KM), and the free gingival margin curvature.@*RESULTS@#Significant difference in the GT was observed between the thick and thin biotypes, which were divided by periodontal probe (P<0.01). Difference was observed in each periodontal biotype characteristic between the thick (GT≥1 mm) and thin biotypes (GT<1 mm) (P<0.05). BT was positively associated with GT (r=0.293, P=0.001), CW/CL (r=0.273, P=0.003), KM (r=0.291, P=0.001), and free gingival margin curvature (r=0.290, P=0.001).@*CONCLUSIONS@#The transparency of the probing in the sulcus could analyze the GT qualitatively. The thick and thin biotypes have different periodontal biotype characteristics. Compared with individuals with thick biotype, those with thin biotype are susceptible to risk dental aesthetic.

The application of digital technology in preclinical education for graduate students majoring in oral implantation / 口腔疾病防治

Objective@#To discuss the application of digital technology in the education of implant dentistry.@* Methods@#According to the teaching method that combines case-, problem- and team-based learning, a course on implant theory was carried out in a class of 20 students. Then, all the students in this class were divided into two groups to receive two clinical operation training courses. The first was the training of a free-hand implant, and the second was an implant operation under a digital template. The courses introduced digital technology into preclinical education and simulated implant training. After the two courses, students were organized to analyze the accuracy of the implant, the operation time and the experiences of these two courses. Through the comparison of students′ operations of free-hand and template implants, students could analyze their own faults and propose a method of improvement. The students scored the two classes. @*Results @# Through the two classes, all the students completed the implant operation under the guidance of a template and free-hand method and found their own problems and solutions. The combination of theory and practice deepened the students′ understanding of the teaching content. Finally, the classes were graded comprehensively by students, showing that the students′ satisfaction with the digital template class was higher than that with the free-hand class (P < 0.05).@*Conclusion@#The addition of a digital implant technology class significantly improved students′ comprehensive assessment, improved the teaching effect and was more acceptable to students in terms of gaining additional professional skills.

Clinical application and new progress of dynamic navigation system in the field of oral implantology / 口腔疾病防治

@#Currently, computer-aided implant surgeries include implant placement surgery under the guidance of a dynamic navigation system. With the use of software inherent in the navigation system, doctors can make a preoperative plan including the ideal position of the implant. Then the plan can be accurately transferred to the surgery, during which the real-time condition of the drill and its relationship with the surgical region will be visualized by the surgeon and the drill can be adjusted in a timely manner. Currently the dynamic navigation system is increasingly widely utilized, especially in cases of esthetic zones or surgical sites with important anatomical structures. However, the clinical workflow of the navigation system is complicated, including CBCT taken after the registration device placement, prosthetic-driven 3D design, calibration, registration, navigated borehole preparation and implant placement surgery. Many details should be considered when the device is applied, including implant position design, fixation of the tracking device, registration, and stable borehole preparation under the guidance of dynamic navigation. Therefore, this article introduces the dynamic navigation system into the clinical workflow and evaluates, the effects of the application and the clinical features. The new progress of the navigation system in the field of implantology is demonstrated at the same time, including navigated surgery in fully edentulous arches and in the zygomatic zone. Further improvements in the navigation system in terms of the accuracy and simplification of the workflow are needed in the future.

Relationship among gingival thickness, underlying alveolar bone thickness, and sagittal root position in the maxillary anterior / 华西口腔医学杂志

<p><b>OBJECTIVE</b>This study aimed to explore the relationship among gingival thickness (GT), underlying alveolar bone thickness (BT), and sagittal root position in the maxillary anterior measured by cone-beam computed tomography (CBCT). The theoretical foundation was applied to aesthetic dentistry, implant treatment planning, and therapeutic effect assessment.</p><p><b>METHODS</b>A total of 40 young volunteers with healthy periodontal status were involved in this research [16 males and 24 females aged 23-34 years with a mean age of (26.30±2.29) years]. Three records were measured by CBCT. GT was measured at the cemento-enamel junction level. Buccal BT was measured at three locations: 1, 3, and 5 mm below the alveolar crest, along the sagittal angle between the long axis of teeth, and along the long axis of the respective alveolar bone.</p><p><b>RESULTS</b>The average GT and alveolar BT thicknesses were (1.08±0.34) mm and (0.79±0.29) mm, respectively. The average angle between teeth and alveolar bone was 18.01°±8.96°. BT was positively associated with GT (r=0.293, P=0.001). The BT of canine was positively associated with the angle between teeth and alveolar bone (r=0.457, P=0.003).</p><p><b>CONCLUSIONS</b>BT was relatively thin. An angle was found between the long axis of teeth and that of the alveolar bone. BT was positively associated with GT. An accurate diagnosis of GT, underlying alveolar BT, and sagittal root position in the maxillary anterior is necessary before implant surgery to devise an appropriate implant treatment plan and achieve a predictable esthetic outcome.</p>

3D printing technology in the application of oral implantology and prosthodontics / 医学研究生学报

3D printing technology has been developing rapidly in recent years, It is first applied in the engineering field, and then extended to medical field. In the field of stomatology 3D printing technology was first mainly applied to medical implants such as artificial bone joints and prostheses. With the development of technology, 3D printing technology is gradually used to manufacture the biologically active tissues such as blood vessels, skin and inner ear. With its unique advantage, 3D printing technology is gradually applied in oral implantology and prosthodontics.This paper reviews the basic steps of 3D printing technology, the technology in oral implantology and prosthodontics，and the existing problems.

Clinical application and research progress of All-on-Four / 口腔疾病防治

@#To seek convenient and effective method for reconstruction of edentulous jaw, Maló and his colleagues developed All-on-Four implant immediate-function concept. The principle of All-on-Four is to support the full-arch prosthesis by 4 implants and to achieve immediate loading after surgery. Its advantages include avoiding additional bone grafting, evading critical anatomical structures and immediate prosthesis. In recent years, All-on-Four technique has been widely utilized in clinical practice as a viable approach for edentulous patients. With the auxiliary of guided surgery and biomechanical researches, All-on-Four has achieved predictable clinical results. In this paper, the development, investigation of biomechanics and main points of surgery and prosthesis of All-on-Four were briefly reviewed.

Continuing professional development of dentists through distant learning: An Indira Gandhi National Open University-Dental Council of India experiment a report.

To keep themselves updated with all the advancements in the field of dentistry, dentists should involve themselves in some kind of professional development. Distance learning is the most appropriate way to serve the growing demand due to technological advancements. Indira Gandhi National Open University in collaboration with Dental Council of India (DCI) developed and launched two continuing professional development programs in Endodontics (postgraduate certificate in endodontics) and postgraduate certificate in oral implantology and has trained over 400 and 280 BDS dentists respectively till date. The program package consists of self‑instructional material, assignments, videos and practical training. The training is conducted in premiere dental colleges and institutions recognized by DCI. The certificate is awarded after a term end examination, both in theory and practical. The pass percentages of the theory courses ranged from around 63% to 98%, and 90% of the candidates cleared the practical exam.

Curriculum design and education practices of oral implantology in medical universities / 中华医学教育探索杂志

Education history and characteristics of oral implantology especially in China were reviewed and commented.Curriculum establishment in China medical universities was proved to be necessary and feasible by analysis of current domestic education condition of graduate and postgraduate.education in oral implantology.In recent three years.practices in implantology education was carried out in School of Stomatology,Fourth Military Medical University.Implantology curriculum was established,with teaching experiences and methods summarized for reference of lmplantology education in other universities.