ObjectiveTo discuss two fixation methods of nasotracheal intubation on the occurrence of nasal pressure sores in patients with maxillofacial surgery.MethodsThree hundred cases of patients under general anesthesia more than 4 hours with the nasal endotracheal intubation were randomly assigned into control group and experiment group with 150 cases in each group.In control group,medical tape was used to fix the endotracheal tube to dorsum,wrapping around the joint of endotracheal tube and threaded pipe.In experiment group,Mepilex foam dressing was used to wrap over the bend of endotracheal tube,with gauze covering the joint of endotracheal tube and threaded pipe before fixing the endotracheal tube to dorsum.Finally,the occurrence of pressure sores from the end of surgery to postoperative 1day were compared between the two groups.ResultsThe incidence of patients with first stage pressure sores was 4.7% in control group while none in experiment group.The incidence of nasal pressure sores was much lower in experiment group than that in control group (P<0.05).ConclusionsThe use of Mepilex foam dressing can reduce the pressure and friction between the endotracheal tube and the dorsum,which effectively prevents nasal pressure sores caused by endotracheal intubation.Therefore when having surgery with nasal general anesthesia and nasotracheal intubation and lastsing over 4 hours,the use of application covering the bend of endotracheal tube can prevent nasal pressure sores.

Objective To evaluate the functional and aesthetic disturbance of patients treated with lingual orthodontic surgery and to investigate the key points of laboratory procedure and clinical treatment of lingual orthodontic deformity. Methods A total of 30 cases of Angle class Ⅰ with moder-ate crowding were selected. They were equally divided into two groups: one group was treated using lingual brackets, and the other using conventional labial brackets. Each patient completed a four-part survey right after the bracket placing and 7, 28, 56 days after the treatment. The differences of tongue-lip-cheek soreness, eating and speech difficulties and aesthetic problems were evaluated be-tween two groups. Lateral cephalograms were analyzed at the start of the treatment and the end of the overall treatment. Results Speech difficulties of lingual orthodontics were significantly greater (P<0.01) than that in the labial orthodontics group in the first week of the treatment. Eating difficulties were greater (P<0.01) in the lingual orthodontics group by 28 days, whereas aesthetic problems were greater in group using labial appliance than group lingual appliance. Conclusions In the first two months of the orthodontic treatment, eating and speech difficulties are the most severe problems for the lingual group. Lingual orthodontics offers important aesthetic advantages over labial orthodontics, and it will be one of the development directions of current orthodontics.

In this study ,we analyzed the genetic characterizations and propagation paths of measles viruses prevalent in Ningbo ,China from 2004 to 2013 .Measles viruses were isolated from throat swab specimens from 2004 to 2013 ,and 450 bp fragments of C terminus of nucleoprotein (N) gene were amplified by RT-PCR .Sequence analysis was conducted of all 31 virus strains ,and then compared with other measles virus strains published in GenBank .Results showed that all the 31 measles virus isolates belonged to genotype H1 ,6 strains (one strains in 2004 and 5 ones in 2005) belonged to H1b subtype ,and others be-longed to H1a subtype .Compared the 31 strains to the China 93-4 and China 94-7 ,the homology of 450 bp fragments of C ter-minus of nucleoprotein (N) gene were 97 .1%-100% and 96 .7%-100% ,respectively .The homology of 450 bp fragments of nu-cleotide and nucleotide (amino acids) compared with S191 were 81 .9%-92 .4% and 87 .2%-90 .6% ,respectively .It’s suggested that genotype H1 measles virus circulated in Ningbo from 2004 to 2013 ,and H1a was the predominant epidemic strain ,and H1b strain was existed as well .There are five different transmission chains of H1a subtype caused measles co-circulations in Ning-bo .

Objective To explore the application effect of the adult education theory in the nursing round. Methods 340 trainee nurses, who were trained at our surgical department between June 2008 and December 2009, were randomly divided into the experimental group(178 cases)and the control group(162cases). The adult education theory was adopted in the experimental group, whereas the traditional education method was used in the control group, a questionnaire was carried out after the nursing visit. Results The experimental group was more satisfied with the round visit than the control group. Conclusions The application of the adult education theory in the round visit is beneficial not only to the students' selection of the topics of nursing visit, but also to the improvement of the students' understanding and communicating capacity, the students' studying interests and the students' creative thinking, finally the degree of satisfaction to the round visit is increased by the adoption of this theory.

Objective To investigate the effects of plaque staining test on periodontal health of middle-aged and elderly patients with dental implants. Methods Ninety patients with dental implants were included in the study and divided into test group (n=45) and control group (n=45) by using random digit table. In the test group, the patients were all instructed with both routine health education and dental plaque dyeing education, while the control group received routine health education only. The plaque index (PLI) and gingival index (GI) were assessed at months 1 and 6 after implant restoration. Results One month after dental implantation, there were no significant differences in PLI and GI between the two groups (P>0.05), while 6 months after the implantation, the differences in PLI and GI between them were significantly different ( P<0 . 01 ) . Conclusion The plaque dyeing technology applied in the oral health education to elderly patients with dental implants can reduce plaque index and gingival index so that their periodontal health is enhanced.

Objective To investigate the risk factors for osteoporosis (OP) in aged people at Beicai Town in Shanghai, to provide proofs for preventing OP. Methods Questionnaire survey was carried out on bone density in 608 aged people (aged from 60 to 79 years) who were randomly chosen from 4 resident committees of Beicai Town in Shanghai. Everyone underwent bone mineral density (BMD) assay of lumbar spine and total hip by DEXA machine. Results The rate of OP was 23 % in male group, and 61% in female group. It was 40% in 60-64 years old group, 44% in 65-69 years old group, 53% in 70-74 years old group and 66% in 75-79 years old group. The rate of OP was 52% in manual work group, and 42 % in non-manual work group. In males, it was 54 % in current weight less than 60 kg group, 19% in 60-70 kg group, 15% in 70-80 kg group and 23% in over 80 kg group. In females, it was 76% in current weight less than 50 kg group, 67% in 50-60 kg group, 63% in 60-70kg group, 30% in over 70 kg group. It was 56% in low body weight group, 41% in normal weight group and 58% in over weight group in their 25-year-old. It was 61% in normal body weight group, 43% in overweight group. It was 41% in non-fracture history group, 67% in once fracture group,74% in fracture history more than twice group. It was 60% in mother humpback history group, and 47% in no history of mother humpback group. Logistic regression analysis showed that gender, age,history of fracture, mother's humpbacked history, disease of internal secretion and metabolism system were the risk factors for OP. Conclusions The occurrence of OP is related with many factors in aged people at Beicai Town in Shanghai, especially for the aged women, who suffer from diseases of internal secretion and metabolism, and has the history of fracture and mother's humpbacked, the attention should be payed to the prevention and treatment of OP.

Objective:To investigate the effect of care bundles on prevention of nasal medical device-related pressure injury in patients with nasotracheal intubation undergoing oral and maxillofacial surgery under general anesthesia.Methods:This was a retrospective study. Using the convenient sampling method, patients with a surgical time more than 4 hours and a surgical grade of 3 or 4, with nasotracheal intubation undergoing oral and maxillofacial surgery under general anesthesia from Hospital of Stomatology, Sun Yat-sen University were selected. A total of 96 patients from July to December 2019 were in the control group, and 99 patients from July to December 2020 were selected as the observation group. The control group was treated with routine nursing measures, the observation group was subjected to a nursing care bundle. The incidence of nasal pressure injury was observed after the operation, 24, 48, 72 hours after the nasotracheal intubation was removed, and patients′ satisfaction score was compared.Results:The incidence of nasal pressure injury in the control group was 6.25% (6/96). None of the patients in the observation group had any pressure injury, which was significantly lower than the control group (Fisher exact probability method, P=0.013). The satisfaction scores in the observation group was significantly higher than that in the control group (26.88 ± 1.94 vs 24.71 ± 3.33), the difference was statistically significant ( t=-5.54, P<0.01). Conclusions:The care bundle can effectively prevent the occurrence of nasal pressure injury in patients undergoing oral and maxillofacial surgery with nasotracheal intubation and improve patient satisfaction.

Objective:To evaluate the clinical value of prenatal molecular diagnostic technology in preventing hereditary diseases through analysis of prenatal diagnostic characteristics in 22 monogenic skeletal disorders pedigrees.Methods:This study retrospectively analyzed prenatal molecular diagnostic results of 22 pedigrees with monogenic skeletal disorders who were admitted to Department of Osteoporosis and Bone Diseases in our hospital from January 2014 to July 2021.Results:Among 22 pedigrees, there were 10 pedigrees with X-linked hypophosphatemic rickets due to PHEX gene mutations, in which 8 fetuses were found to carry pathogenic variants; 6 pedigrees with osteopetrosis, including 3 cases of CLCN7 gene mutation, 2 TCIRG1 gene mutation, and 1 CTSK gene mutation, were detected to have 2 affected fetuses and 1 carrier. There were 4 cases of osteogenesis imperfecta, including 2 cases of COL1A1 gene mutation, 1 case of COL1A2 gene mutation, and 1 case of SERPINF1 gene mutation, in which 1 affected fetus and 1 carrier were found; only one case of osteoarthritis with mild chondrodysplasia caused by COL2A1 gene mutation was found to harbor pathogenic variant in fetus; 1 case of hypophosphatasia due to ALPL gene mutation was not detected to carry pathogenic variant in fetus. By the time of follow-up, all 12 affected fetuses were terminated, and the remaining 10 fetuses except for one case still in pregnancy were born in good condition.Conclusion:Prenatal molecular diagnosis may confirm whether the fetus carries pathogenic variants at the first and second trimesters. For monogenic skeletal disorders that comply with Mendel′s law of separation, prenatal diagnosis can be determined by calculating the probability of recurrence of offspring. In addition, for families with de novo mutations in the offspring, it is necessary to pay attention to whether there are mosaic mutations in the parents.

Digital intraoral scanning is a hot topic in the field of oral digital technology. In recent years, digital intraoral scanning has gradually become the mainstream technology in orthodontics, prosthodontics, and implant dentistry. The precision of digital intraoral scanning and the accuracy and stitching of data collection are the keys to the success of the impression. However, the operators are less familiar with the intraoral scanning characteristics, imaging processing, operator scanning method, oral tissue specificity of the scanned object, and restoration design. Thus far, no unified standard and consensus on digital intraoral scanning technology has been achieved at home or abroad. To deal with the problems encountered in oral scanning and improve the quality of digital scanning, we collected common expert opinions and sought to expound the causes of scanning errors and countermeasures by summarizing the existing evidence. We also describe the scanning strategies under different oral impression requirements. The expert consensus is that due to various factors affecting the accuracy of digital intraoral scanning and the reproducibility of scanned images, adopting the correct scanning trajectory can shorten clinical operation time and improve scanning accuracy. The scanning trajectories mainly include the E-shaped, segmented, and S-shaped methods. When performing fixed denture restoration, it is recommended to first scan the abutment and adjacent teeth. When performing fixed denture restoration, it is recommended to scan the abutment and adjacent teeth first. Then the cavity in the abutment area is excavated. Lastly, the cavity gap was scanned after completing the abutment preparation. This method not only meets clinical needs but also achieves the most reliable accuracy. When performing full denture restoration in edentulous jaws, setting markers on the mucosal tissue at the bottom of the alveolar ridge, simultaneously capturing images of the vestibular area, using different types of scanning paths such as Z-shaped, S-shaped, buccal-palatal and palatal-buccal pathways, segmented scanning of dental arches, and other strategies can reduce scanning errors and improve image stitching and overlap. For implant restoration, when a single crown restoration is supported by implants and a small span upper structure restoration, it is recommended to first pre-scan the required dental arch. Then the cavity in the abutment area is excavated. Lastly, scanning the cavity gap after installing the implant scanning rod. When repairing a bone level implant crown, an improved indirect scanning method can be used. The scanning process includes three steps: First, the temporary restoration, adjacent teeth, and gingival tissue in the mouth are scanned; second, the entire dental arch is scanned after installing a standard scanning rod on the implant; and third, the temporary restoration outside the mouth is scanned to obtain the three-dimensional shape of the gingival contour of the implant neck, thereby increasing the stability of soft tissue scanning around the implant and improving scanning restoration. For dental implant fixed bridge repair with missing teeth, the mobility of the mucosa increases the difficulty of scanning, making it difficult for scanners to distinguish scanning rods of the same shape and size, which can easily cause image stacking errors. Higher accuracy of digital implant impressions can be achieved by changing the geometric shape of the scanning rods to change the optical curvature radius. The consensus confirms that as the range of scanned dental arches and the number of data concatenations increases, the scanning accuracy decreases accordingly, especially when performing full mouth implant restoration impressions. The difficulty of image stitching processing can easily be increased by the presence of unstable and uneven mucosal morphology inside the mouth and the lack of relatively obvious and fixed reference objects, which results in insufficient accuracy. When designing restorations of this type, it is advisable to carefully choose digital intraoral scanning methods to obtain model data. It is not recommended to use digital impressions when there are more than five missing teeth.