OBJECTIVES: This study aimed to investigate the feasibility of measuring the soft tissue height of bone cristae around implant by digital method. METHODS: A total of 36 patients with dental implants were selected from the Dental Medicine Center of the First Affiliated Hospital of University of Science and Technology of China (Anhui Provincial Hospital) from August 2022 to December 2022. A total of 43 dental implants were enrolled. All postoperative cone beam CT (CBCT) imaging data and intraoral digital impressions obtained before surgery were immediately obtained by the patients on the day of completion of oral implant surgery and they were imported into oral implant surgery planning software for image fitting. Then, virtual implants of the same specification were placed in the planting area, and the implant position was adjusted to overlap with the implant shadow in the CBCT image. Supracrestal tissue height (STH) was measured at the implant view interface (digital group). During the operation, implant holes were prepared step by step in accordance with the standard preparation method, and implants were implanted. The upper edge of the implant was flushed with the crest of the alveolar ridge. STH was measured by perio-dontal probing (periodontal probe group). Paired t-test was used to compare the STH differences between the digital and periodontal probe groups. Bland-Altman test was used to analyze the consistency of the two methods. Intra-group correlation coefficient (ICC) was used to verify the reliability of the results measured by different surveyors using di-gital methods. RESULTS: No statistical significance was observed in the STH difference between the two methods (P>0.05). Bland-Altman test showed good consistency between the two methods, but the measurement of mandibular posterior teeth showed that the results of periodontal probe were greater than those of digital method. The ICC and 95%CI of the STH results measured digitally by different surveyors are 0.992 (0.986-0.996). CONCLUSIONS The digital me-thod is in good agreement with the periodontal probe method in measuring the soft tissue height of the bone cristae around the implant.
Humans ; Alveolar Process/diagnostic imaging* ; Cone-Beam Computed Tomography/methods* ; Dental Implants ; Feasibility Studies ; Reproducibility of Results ; Tooth/diagnostic imaging*

Objective:By analyzing the epidemiological characteristics of brucellosis in Shanxi Province, to provide scientific evidence of strategies for effective prevention and control of the disease.Methods:Surveillance data of human brucellosis from "Infectious Disease Report Information Management System" from 2008 to 2017 were statistically analyzed by descriptive epidemiological method. The time, regional and occupational distribution of brucellosis were analyzed.Results:A total of 54 845 cases of brucellosis occurred in Shanxi Province from 2008 to 2017. The average annual incidence was 15.37/100 000, fluctuated from 8.34/100 000 to 23.53/100 000. One death case was reported in 2015. The highest incidence was 23.53/100 000 in 2014 and the lowest reported incidence was 8.34/100 000 in 2017. Regional distribution range relatively focused on the north areas of Shanxi Province, the number of reported cases of Datong City was the largest (13 998 cases), accounting for 25.52%. The reported incidence of Shuozhou City was the highest (49.68/100 000). The disease was found each month throughout the year, the obvious incidence peak seasons were between March and July, accounting for 60.11% (32 966/54 845).The disease was most commonly found in 40-64 age groups (64.73%, 35 502/54 845). Occupational distribution of patients was mainly farmers (82.97%, 45 504/54 845).Conclusions:The epidemiology tendency of brucellosis in Shanxi Province is relatively controlled comparing with previous period, but even highly active in some local areas. The epidemic situation has spreading in both scope and population. It is necessary to carry out the propaganda of the protection knowledge of brucellosis in the key groups and enhance the self-protection consciousness of high-risk groups.