Objective:To study the masseter motor evoked potential(MEP)in patients with sleep bruxism(SB)and in healthy con-trols.Methods:30 subjects with SB and 30 healthy controls were included.MEPs were obtained by transcranial magnetic stimulation (TMS).Tests were done during daytime when the subjects were awake.The data were statistically analysed.Results:In the patients AMT was 55(52,55)%,latency of c-MEP (6.7 ±1.3)ms,the amplitude of c-MEP 0.19(0.15,0.29)mV,latency of r-MEP (2.3 ±0.4)ms,the central conduction time(CCT)4.4(3.3,5.2)ms.In the control subjects AMT was 52(52,55)%,latency of c-MEP (6.4 ±0.7)ms,the amplitude of c-MEP 0.23(0.17,0.28)mV,latency of r-MEP (2.4 ±0.4)ms,CCT 4.0 (3.4,4.4) ms.No significant difference was found between the 2 groups in the measurements evoked by TMS.Conclusion:The MEP after TMS in patients with SB is similar to that of healthy subjects,indicating that the excitability of the cortical motor system is not changed in bruxism subjects,at least when evaluated by TMS.

Objective To explore the related factors that might had effect on orthodontic patients' esthetic evaluation of axial dental midline angulation from three aspects which are ideal value,detectable value and tolerable value.Methods Photographs of a smiling woman was digitally manipulated to produce models with left or right maxillary axial dental midline angulations in 2° increments.These digital photographs models were used to develop an electronic questionnaire in combination with corresponding guidance for each question.The electronic questionnaire was applied to investigate the esthetic evaluation of axial dental midline angulation from 222 orthodontic patients who complied with the inclusion criteria.Esthetic evaluation included three aspects,the ideal value,the detectable value and the tolerable value,which represented the degrees of maxillary axial dental midline angulations the patients considered to be ideal,detectable and tolerable,respectively.The patients' personal information and clinical orthodontic examination results were collected as well.Results The mean detectable value and tolerable value were 4.9° and 9.7°,the median of detectable value and tolerable value were 5°and 9.5°.Logistic regression analysis was applied to explore the influence of seven factors on each evaluator's ideal value,detectable value and tolerable value.The seven factors were gender,marriage condition,education level,orthodontic treatment condition,malocclusion index,dental esthetic rating from others and from themselves.The statistical analysis indicated education level and orthodontic treatment condition were the influential factors of detectable values,while the tolerable values were influenced by the education level and gender.The ideal value converged to 0° and none of the factors had effect on it.Conclusions The education level,orthodontic treatment condition and gender are considered to be the influential factors of the esthetic evaluation of axial dental midline angulation.

Objective To study the value of BCSG1 on evaluating the curative effect of neoadjuvant chemotherapy(NC) for breast cancer.Methods The expression of BCSG1 in cancer tissue was assayed by immunohistochemistry and RT-PCR in 36 cases of breast cancer patients before and after receiving NC of CEF(cyclophosphamide,epirubicin and fluorouracil) regimen.The therapeutic response of NC was evaluated by morphological and pathological observation.The relationship between expression of BCSG1 and morphological response to NC was analyzed.Results Among the studied cases,the diameter of tumor significantly decreased(P

OBJECTIVETo evaluate the most acceptable lower anterior face height of male and female by orthodontic treatment seeking people.

METHODSTwo hundred and thirty-two Chinese orthodontic seeking people of Guanghua Hospital of Stomatology of Sun Yat-sen University were randomly selected in this survey. An electronic questionnaire was designed with a set of male and female young Chinese adult images with changes of the lower anterior face height (while the middle anterior face height remains the same). They were asked about the lowest, highest and optimal proportion (or so-called lower, higher and optimum limits respectively) between the lower anterior face height and the middle anterior face height (LAFH/MAFH) they could accept. All the findings of the proportion were analyzed by a statistic system.

RESULTSThe lower limits' median value in regard to the LAFH/MAFH of male model and female model images was 0.8, this limit value for the male model's was greater than the female model's (P = 0.039); the higher limits' median value was 1.1, this limit value for the male model's was less than the female model's (P < 0.001); the optimum limits' median value was 0.9, this limit value for the male model's was greater than the female model's (P < 0.001).

CONCLUSIONThe result of this study shows all lower, higher and optimal limits accepted by the orthodontic treatment seeking people in regard to the proportion between the lower and middle height of anterior faces. This result will facilitate the understanding of aesthetic judgments of orthodontic patients on profile lower anterior facial height for orthodontist in treatments.

Adolescent ; Adult ; Cephalometry ; Esthetics, Dental ; Face ; Female ; Humans ; Male ; Vertical Dimension

Objective To explore the influential factors of esthetic evaluation of mandibular prominence by orthodontic patients from two dimensions (ideal value and tolerance range).Methods 226 orthodontic patients were investigated by an electronic questionnaire of esthetic evaluation of mandibular prominence.Binary logistic regression was adopted to analyze the influential factors.Results The tolerable boundary value for female mandibular retrognathism was affected by age (OR1.360) and orthodontic history (OR2.849).The tolerable boundary value for female mandibular prognathism and male mandibular retrognathism were found to be affected by orthodontic history (OR2.557 and 2.845,respectively).The tolerable boundary value for male mandibular prognathism was affected by age (OR1.347) and orthodontic history (OR2.310).The ideal value of male mandibular prominence was affected by age (OR1.420).Conclusions Orthodontic patients' esthetic evaluation of mandibular prominence is influenced by age and treatment condition,but not by sex,education level,marital status and personal profile.

Objective To explore the expression level and clinical significance of α-Arrestin domain-containing protein 3(ARRDC3)gene in human brain glioma tissues.Methods Clinical data and gene expression of patients with brain glioma were analyzed using the Chinese Glioma Genome Atlas(CGGA)database and the Cancer Genome Atlas(TCGA)database.Brain glioma specimens were collected from 9 patients with primary brain gliomas treated in the Department of Neurosurgery,the Affiliated Hospital of Xuzhou Medical University from January 2018 to December 2021.The expression levels of ARRDC3 in gliomas of different grades were detected through immunohistochemical experiments.The expression levels of ARRDC3 in gliomas with different molecular types and grades were analyzed by using thenon-parametrictest.The effect of ARRDC3 expression on the survival time of brain glioma patients was analyzed by using the Kaplan-Meier survival curve,while the effect of ARRDC3 expression on prognosis of glioma patients was analyzed by using univariate and multivariate Cox regression models.Results Data in the CGGA and TCGA databases showed that the expression of ARRDC3 in the grade Ⅱ,Ⅲ and Ⅳhuman brain gliomas increased gradually(P＜0.05).The results of immunohistochemical staining experiments were consistent with the above results(P＜0.05).The ARRDC3 expression in isocitrate dehydrogenase(IDH)wild type glioma patients was significantly higher than that in IDH mutant glioma patients(P＜0.05).The overall survival of the patients with high ARRDC3 expression was significantly shorter than that of the patients with low ARRDC3 expression(P＜0.05).Multivariate Cox regression analysis revealed that age,IDH mutation state,radiotherapy and ARRDC3 expression were risk factors for prognosis of human brain glioma patients(P＜0.05).Conclusion With the pathological grade rising gradually,the relative expression level of ARRDC3 in human brain glioma tissues increases gradually.The prognosis of brain glioma patients with low expression of ARRDC3 is significantly better than that of patients with high expression of ARRDC3.ARRDC3 can be used as a prognostic factor for glioma patients.