Objective To explore the differences of memory functions and objective sleep parameters and their correlations in patients with insomnia disorder in different subtypes.Methods Eightynine patients with insomnia disorder,including 11 patients with difficulty initiating sleep(DIS),20 patients with early morning awakening(EMA),20 patients with difficulty maintaining sleep (DMS) and 38 patients with mixed sleep symptoms(MS) were enrolled between August 2012 and February 2014 in the Memory and Sleep Disorders Clinic of the First Affiliated Hospital of Anhui Medical University.Memory functions,including objective memory,spatial memory,working memory and reference memory were detected with nine boxes maze,and objective sleep profiles were assessed using polysomnography.Results The error numbers of spatial(H =15.404,P =0.002) and working (H =10.126,P =0.018) memories were significantly different among the 4 subtypes of patients,with more errors of spatial and working memory in the EMA (6.00 (5.00,8.00),5.00 (4.00,6.00)) and MS (5.00 (3.75,7.25),5.00 (2.75,7.00)) groups compared with the DMS (2.50 (2.00,4.00),2.00 (1.00,4.00)) group (tspstial =3.938,3.428;t =2.803,2.840;all P ＜ 0.05).Sleep efficiency(H =7.929,P =0.048),REM sleep time(F =2.840,P =0.043) and the percentage of REM sleep time on total sleep time (REM％;H =7.913,P =0.048) were also significantly different among the 4 subtypes of patients,with lower sleep efficiency in the MS(69.7％ (50.5％,78.7％)) group compared with the EMA (81.0％ (64.8％,86.4％)) and DMS (80.2％ (62.6％,88.9％)) groups (t =2.242,2.352;all P ＜ 0.05),less REM sleep time (min) and REM％ in the EMA(61.6 ±27.1,16.9％ (13.1％,21.9％)) and MS(56.9 ±31.4,16.9％ (11.5％,21.2％)) groups compared with the DMS (80.9 ± 32.7,22.3％ (18.5％,25.5％)) group (qREM time =3.791,5.397;tREM％ =2.513,2.612;all P ＜0.05).The error numbers of working memory and spatial memory negatively correlated with the REM sleep time (r =-0.387,-0.348;all P ＜ 0.05) and REM％ (r =-0.350,-0.354;all P ＜ 0.05).Conclusions There are discrepancies in the spatial and working memories and subtle differences in the objective sleep parameters among the patients with different subtypes of insomnia disorder.The worse memories in insomnia disorder patients might be associated with the decreased REM sleep.

OBJECTIVE: To explore the ways of quantitative and objective evaluation for analyzing the multiple influence factors on middle ear function in the patients with primarily diagnosed NPC, and to analyze the influence factors of middle ear function in the patients with primarily diagnosed nasopharyngeal carcinoma (NPC). METHOD: Three hundred and twenty cases (320 ears) of primarily diagnosed NPC patients were examinated with electric otoscope, acoustic immittance measurement, pure tone audiometry, nasopharynx and middle ear CT or MRI scanning, eustachian tube function examination, and electronic nasopharyngoscope. A series of quantitative methods, as the influence factors including T stage, clinical stage, location, diffusion type and form of tumor, eustachian tube function, pharynx mouth shape, imaging extension (nasal, skull base, pharyngeal recess, parapharyngeal space, tensor veli palatini muscle, levator veli palatini and so on), were used to evaluate the middle ear function. SPSS 13.0 was used to anlyze the single and multiple factors in statistics. RESULT: T stage, clinical stage, location, diffusion type, and form of tumor, pharynx mouth shape, imaging extension (nasal, skull base, pharyngeal recess, parapharyngeal space, tensor veli palatini muscle, levator veli palatini) were the single influence factors on the function of middle ear in primarily diagnosed NPC patients. The gender, age, pathological types, N staging and M staging of NPC patients primarily diagnosed had no effect on middle ear function. The multple factors analysis showed that T stage, tumor location, the function of eustachian tube, tensor veli palatini muscle invasion, and skull base invasion were independent factor of affecting the middle ear function on primarily diagnosed NPC patients. CONCLUSION In this study, the influence factors of middle ear function with primarily diagnosed NPC were related to T stage, location of tumor, the function of eustachian tube, tensor veli palatini muscle invasion, skull base invasion, otitis media and quantitative criteria. The way of quantitative analysis could be used to evaluate objectively the middle ear function in patients with primarily diagnosed NPC.
Adult ; Aged ; Aged, 80 and over ; Carcinoma ; Ear, Middle ; physiopathology ; Female ; Humans ; Male ; Middle Aged ; Nasopharyngeal Carcinoma ; Nasopharyngeal Neoplasms ; diagnosis ; physiopathology ; Young Adult

Objective To construct three-dimensional finite element models with modified crown lengthening surgery and post-core restoration in management of various crown-root fracture types,to investigate the intensity and distribution of stressin models mentioned above,and to compare and analyze the indications of traditional and modified crown lengthening surgeries from the mechanic point of view.Methods Nine three-dimensional finite element models with modified crown lengthening surgery and post-core restoration were established and analyzed by micro-CT scanning technique,dental impression scanner,Mimics 10.0,Geomagic studio 9.0 and ANSYS 14.0 software.The von Mises stress of dentin,periodontal ligament,alveolar bone,post and core,as well as the periodontal ligament area and threshold limit value were calculated and compared with the findings of traditional crown lengthening models which had been published earlierby our research group.Results The yon Mises stress intensity of modified crown lengthening models were:dentin＞post＞core＞alveolar bone＞periodontal ligament.The maximum von Mises stress of dentin(44.37-80.58 MPa) distributed in lingual central shoulder.The periodontal ligament area of the modified crown lengthening surgery was reduced by 6％ to 28％,under the same crown-root fracture conditions,the periodontal ligament area of modified crown lengthening models was larger than that of the traditional crown lengthening models.In modified crown lengthening surgery models,the yon Mises stress of periodontal ligament of B3L1m,B3L2m,B3L3m models exceeded their limit values,however,the yon Mises stress of periodontal ligament of the B2L2c,B2L3c,B3L1c,B3L2c,B3L3c models exceeded their limit values in traditional crown lengthening surgery models.Conclusions The modified crown lengthening surgery conserves more periodontal supporting tissues,which facilitates the long-term survival of teeth.The indication of modified crown lengthening surgery is wider than traditional method.The maxillary central incisors with labial fracture at gingival margin level and with palatal fracture at or below the alveolar crest level are not the indication of the crown lengthening surgery.