2017年 · 第52卷第09期

In the era of rapid development of digital technology, the emergence and development of any new orthodontic technology contains the factors and connotations of digital technology. As we all know, any wrongThe diagnosis and treatment design of deformities are inseparable from the analysis of dental and jaw models, and the establishment of digital three-dimensional dental and jaw model system lays the premise and foundation of invisible correction without brackets. Bracketless invisible orthodontic technology first appeared in the United States in the 1990s. Today, various bracketless invisible orthodontic products have been more and more used in orthodontic clinic at home and abroad, showing the technical development ability and market promotion potential of this new digital orthodontic orthodontic technology. Looking at all kinds of new orthodontic techniques that have appeared in recent years, bracketless invisible orthodontic techniques have attracted widespread attention in the industry and have been developing rapidly. We can see that more and more orthodontists are gradually applying this technology, more and more orthodontic patients are also consulting and experiencing this technology, and more and more academic conferences are holding special seminars on this technology, etc., presenting a very hot and hot scene. However, the hotter the new technology, the more seriously and soberly we should understand and analyze the new situations and changes in the rapid development of this technology, which is indeed happy and worried.

Toothpaste is an oral health care product that can be used to help cleansing teeth and improve oral hygiene. Currently use of toothpaste has been transferred from the conventional objective of oral hygiene to the new era of prevention and intervention of oral diseases. Therefore, functional toothpaste has been developed in a fast way. It is imperative to investigate toothpaste, because the wise use of specific functional toothpaste could prevent or reduce oral diseases such as dental caries and periodontal diseases, improve people's oral and general health and save social healthcare resources. However, dental professionals have various understandings on the efficacy and differentiations of functional toothpastes. For example, there are different explanations for the efficacy of functional toothpastes, which may exaggerate, depreciate or deny their clinical efficacy. To ensure the highest level of the patient's safety and professional satisfaction for both toothpaste products and related informatics, and also to make the dentists be acquainted with the updated research findings, developments and standards, it is necessary to review systematically the efficacy of functional toothpaste.

At present, the clinical indications of bracketless invisible correction have been gradually broadened, and it has begun to be used in complex subtractive correction^[1,2,3]。 A patient with 4 first premolars subtracted and a bracketless invisible orthodontic technique was used to correct crowded and protruding teeth was reported.

As a rapidly developing emerging orthodontic technology, bracketless invisible orthodontic treatment is favored by patients and orthodontists for its advantages of removability, aesthetics, comfort, convenience and highly predictability. However, due to the limitation of material properties, this technique has its special scope of application, and it is not comparable to the traditional fixed orthotic technique in terms of orthotic efficacy^[1]。 In recent years, with the continuous clinical exploration and attempt, as well as the progress of material properties and application software, the indications for bracketless invisible orthotics have been significantly expanded, showing the orthotic efficacy not inferior to that of traditional appliances. With the help of bracketless invisible orthodontic technology, our research group pushed the molars of an adult patient with moderately crowded dentition to move distally, and achieved good results, which are reported as follows.

The scheme design and treatment process of bracketless invisible appliance are different from traditional fixed appliance. Our research group applied bracketless invisible correction technique to correct Angle's Class II Class 2 malocclusionDeformity with deep overlayOne case with satisfactory efficacy is reported as follows.

hypophosphatasia (HP) is a rare autosomal dominant or recessive genetic disease caused by mutations in the alkaline phosphatase gene (liver/bone/kidney alkaline phosphatase, ALPL) encoding tissue-non-specific alkaline phosphatase (TNAP), which mainly affects the development of patients' bones and teeth. The prevalence of severe HP is about 1 in 100,000^[1]。 HP is commonly classified as perinatally lethal, perinatally benign, infantile, pediatric, adult, and dental^[2]。 This study examined the mutation of ALPL gene in a patient with dental HP, evaluated the effect of the mutation on protein function, and explored the relationship between the mutation and clinical phenotype.

The symposium on the application of 3D printing in the field of stomatology, co-sponsored by the editorial board of Chinese Journal of Stomatology and Jingwei Xincheng (Beijing) Technology Co., Ltd., was held in Beijing Beichen Intercontinental Hotel on the afternoon of June 8, 2017. The meeting was chaired by Professor Hu Min of the People's Liberation Army General Hospital. Professor Yu Guangyan, president of Chinese Stomatological Association, and Professor Zhao Yimin, editor-in-chief of Chinese Journal of Stomatology, attended the opening ceremony of the conference and made speeches respectively. Liu Bin, the head of domestic first-line denture processing factory and the fourth director of the review department of the State Food and Drug Administration, delivered special speeches on the application of 3D printing in actual production and the interpretation of the approval policy of 3D printed implants. The expert team of Chinese Journal of Stomatology, stomatological colleges, public hospitals, private stomatological hospitals and clinics, denture processing and 3D printing equipment manufacturing enterprises jointly discussed the application status and future development direction of 3D printing in the field of stomatology for the first time.