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Awareness and Knowledge of Undergraduate Dental Students about Sterilization/Disinfection Methods of Extracted Human Teeth. 口腔医学本科学生对人拔牙灭菌/消毒方法的认识与了解
Pub Date : 2016-11-01 DOI: 10.4103/amhsr.amhsr_85_16
S C Deogade, S S Mantri, S Saxena, K Sumathi

Background: Dental undergraduate students work on extracted human teeth in preclinical practical's to learn technical skills before entering the clinics and delivering dental care to the patients.

Aim: The aim of the present investigation was to assess the awareness and knowledge toward sterilization/disinfection methods of extracted human teeth in a selected group of Indian dental students.

Materials and methods: In this descriptive cross-sectional study, the participants consisted of 2nd-, 3rd-, 4th-, and 5th-year dental students. Data were collected by questionnaires and analyzed by Mann-Whitney U-test and Kruskal-Wallis test using SPSS software version 16 for Windows (SPSS Inc., Chicago, IL, USA).

Results: In this study, 235 dental students participated in the study. The average awareness and knowledge score was 7.27 (1.92). Based on the opinion of 57% (134/235) students, hydrogen peroxide was selected as the suitable material for sterilization and 24.6% (58/235) students believed that autoclave sterilization is a good way for the purpose.

Conclusion: The results of this investigation indicated that awareness and knowledge of undergraduate dental students in relation to sterilization/disinfection methods of extracted human teeth were good. However, deficiencies were observed in relation to teaching the material and methods suitable for sterilization.

背景:牙科本科学生在临床前实习中从事拔牙工作,学习技术技能,然后进入诊所为患者提供牙科护理。目的:本调查的目的是评估一组选定的印度牙科学生对拔牙灭菌/消毒方法的认识和知识。材料和方法:在这个描述性横断面研究中,参与者包括二年级、三年级、四年级和五年级的牙科学生。采用问卷调查法收集数据,采用SPSS软件16 (SPSS Inc., Chicago, IL, USA)进行Mann-Whitney u检验和Kruskal-Wallis检验。结果:本研究共有235名牙科学生参与。平均意识和知识得分为7.27分(1.92分)。57%(134/235)的学生选择过氧化氢作为灭菌材料,24.6%(58/235)的学生认为高压釜灭菌是一种很好的灭菌方式。结论:调查结果表明,口腔专业本科学生对人拔牙灭菌/消毒方法的认知和了解程度较好。然而,在教学适用于灭菌的材料和方法方面存在不足。
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引用次数: 6
Spouses' Perspective of their Participation and Role in Childbirth Pain Relief. 配偶的观点,他们的参与和作用在分娩疼痛缓解。
Pub Date : 2016-11-01 DOI: 10.4103/amhsr.amhsr_12_16
A U Emelonye, T Pitkäaho, A Aregbesola, K Vehviläinen-Julkunen
Background: Childbirth is a period characterized by severe pain, and most women desire to ameliorate their pain among other things by having their spouses present and involved in the birthing process. In developing countries like Nigeria, spousal involvement is still an emerging concept in childbirth. Aim: To investigate and provide an insight into spousal perceptions toward their participation and role in labor pain relief during childbirth in Nigeria. Subjects and Methods: A cross-sectional descriptive study of 142 spouses was conducted in the maternity units of four hospitals in Abuja, Nigeria, from June to December 2014. Data were collected through a pretested interview-administered 24 item questionnaire, the Abuja Instrument for Parturient Spouse. The data were analyzed statistically using Chi-square test for association between the variables and content analysis for open-ended questions. Results: Most (94.4%, 134/142) of the spouses had a positive perception toward labor pain relief. They believed that their presence and activities contributed to labor pain relief and are willing to be present at subsequent births. Conclusion: Findings in this study have revealed a positive trend in spousal perception and involvement during childbirth and pain relief, as contrast to the prevailing assumption that childbirth is an exclusive woman affair. Spousal presence during childbirth can be beneficial not only to the woman but also to the spouse and family.
背景:分娩是一个以剧烈疼痛为特征的时期,大多数女性希望通过配偶在场并参与分娩过程来减轻疼痛。在尼日利亚等发展中国家,配偶参与分娩仍然是一个新兴概念。目的:调查和提供洞察配偶的看法,对他们的参与和作用在分娩期间分娩疼痛缓解在尼日利亚。研究对象和方法:2014年6月至12月,在尼日利亚阿布贾四家医院的产科病房对142名配偶进行了横断面描述性研究。数据是通过预先测试的访谈管理的24项问卷,即产妇配偶阿布贾文书收集的。采用卡方检验对变量间的相关性进行统计分析,对开放性问题进行内容分析。结果:绝大多数(94.4%,134/142)夫妻对分娩疼痛缓解有积极的认知。她们相信她们的存在和活动有助于缓解分娩疼痛,并愿意在随后的分娩中出现。结论:本研究的发现揭示了配偶在分娩和疼痛缓解过程中的感知和参与的积极趋势,这与普遍认为分娩是女性专属的假设相反。配偶在分娩时在场不仅对妇女有利,而且对配偶和家庭也有利。
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引用次数: 5
Pseudohyperglycemia: Effects of Unwashed Hand after Fruit Peeling or Handling on Fingertips Blood Glucose Monitoring Results. 假性高血糖:水果削皮或处理后不洗手对指尖血糖监测结果的影响。
Pub Date : 2016-11-01 DOI: 10.4103/amhsr.amhsr_396_15
M A Olamoyegun, T Oloyede, O G Adewoye, S O Abdulkarim, A A Adeleke

Background: Self-monitoring of blood glucose (SMBG) is an important component of management for diabetes mellitus (DM), especially in T1DM and T2DM patients who are on insulin therapy. Adequate blood glucose monitoring and prompt intervention are necessary to prevent blood glucose (BG) fluctuation and delay long-term diabetes complications. People with DM are advised to clean their hands before SMBG to remove any dirt or food residue that might affect the reading.

Aim: The study tested the hypothesis that falsely elevated BG levels from fingertip occur after peeling or handling fruits in an unwashed hand.

Methods: Fifty apparently healthy nondiabetes volunteers were enrolled. Capillary BG samples were collected from the fingertips after peeling or handling apple, orange, banana, watermelon, and pawpaw, followed by no hand washing for 1 h, cleaning the fingertip with alcohol swab once, five times, and washing hand thoroughly with tap water and drying. These samples were then analyzed with two different glucose meters.

Results: The mean BG values, measured from fingertip blood samples after peeling, and handling any of the fruits followed by no hand washing were significantly high, even after cleaning fingertip with a swab of alcohol once. However, there were no significant difference in BG levels measured after peeling and handling fruits followed by hand washing and the level of BG before peeling and handling fruits.

Conclusion: Handling of peeled fruits with no hand washing with tap water is associated with overestimation of capillary BG (Pseudohyperglycemia) monitored with glucose meters.

背景:自我血糖监测(SMBG)是糖尿病(DM)管理的重要组成部分,特别是在接受胰岛素治疗的T1DM和T2DM患者中。充分的血糖监测和及时干预是防止血糖波动和延缓长期糖尿病并发症的必要条件。糖尿病患者建议在进行SMBG前先洗手,以清除任何可能影响读数的污垢或食物残渣。目的:该研究验证了一种假设,即在剥水果或用未洗手的手处理水果后,指尖的血糖水平会出现错误升高。方法:招募了50名表面健康的非糖尿病志愿者。苹果、橘子、香蕉、西瓜、木瓜去皮或处理后指尖采集毛细管BG样本,1 h不洗手,用酒精棉签清洁指尖1次,5次,用自来水彻底洗手并晾干。然后用两种不同的血糖仪分析这些样品。结果:剥皮后指尖血液样本测量的平均BG值,处理任何水果后不洗手,即使用酒精棉签清洁指尖一次,也显着高。然而,在水果去皮和处理后洗手后测量的BG水平与去皮和处理水果前的BG水平没有显著差异。结论:未经自来水洗手处理去皮水果与血糖仪监测的毛细血管BG(假性高血糖)过高有关。
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引用次数: 3
Pustulovesicular Skin Eruption as Presenting Feature of Incomplete Kawasaki Disease. 不完全性川崎病的表现特征:皮肤脓疱疱疹。
Pub Date : 2016-11-01 DOI: 10.4103/amhsr.amhsr_248_15
J P Goyal, V B Shah
Dear Sir, A 12-year-old female was referred with a history of fever and abdominal pain for 10 days and swelling all over her body for 4 days. Swelling developed initially over her left leg and arm followed by the right extremities, later involving the entire body. She also gave a history of passage of red-colored urine for 1 day. On general physical examination, she was febrile (temperature −102°F) with mild pallor and erythema over the lips. Her blood pressure was normal and there was no lymphadenopathy. On abdominal examination, mild ascites and tenderness were present. She had pustulovesicular lesions all over the right forearm [Figure 1] and right knee joint along with erythematous skin rash over her buttock and back. The rest of her systemic examination was normal. Investigations are tabulated in Table 1.
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引用次数: 1
Health Status and Lifestyle Habits of US Medical Students: A Longitudinal Study. 美国医学生健康状况与生活习惯:一项纵向研究
Pub Date : 2016-11-01 DOI: 10.4103/amhsr.amhsr_469_15
B J Brehm, S S Summer, J C Khoury, A T Filak, M A Lieberman, J E Heubi

Background: Evidence shows that physicians and medical students who engage in healthy lifestyle habits are more likely to counsel patients about such behaviors. Yet medical school is a challenging time that may bring about undesired changes to health and lifestyle habits.

Aims: This study assessed changes in students' health and lifestyle behaviors during medical school.

Subjects and methods: In a longitudinal study, students were assessed at both the beginning and end of medical school. Anthropometric, metabolic, and lifestyle variables were measured at a clinical research center. Data were collected from 2006 to 2011, and analyzed in 2013-2014 with SAS version 9.3. Pearson's correlations were used to assess associations between variables and a generalized linear model was used to measure change over time.

Results: Seventy-eight percent (97/125) of participants completed both visits. At baseline, mean anthropometric and clinical measures were at or near healthy values and did not change over time, with the exception of increased diastolic blood pressure (P = 0.01), high-density lipoprotein-cholesterol (P < 0.001), and insulin (P < 0.001). Self-reported diet and physical activity habits were congruent with national goals, except for Vitamin D and sodium. Dietary intake did not change over time, with the exceptions of decreased carbohydrate (percent of total energy) (P < 0.001) and sodium (P = 0.04) and increased fat (percent of total energy) and Vitamin D (both P < 0.01). Cardiovascular fitness showed a trend toward declining, while self-reported physical activity increased (P < 0.001).

Conclusions: Students' clinical measures and lifestyle behaviors remain generally healthy throughout medical school; yet some students exhibit cardiometabolic risk and diet and activity habits not aligned with national recommendations. Curricula that include personal health and lifestyle assessment may motivate students to adopt healthier practices and serve as role models for patients.

背景:有证据表明,从事健康生活习惯的医生和医学生更有可能就这些行为向患者提出建议。然而,医学院是一个具有挑战性的时期,可能会给健康和生活习惯带来意想不到的变化。目的:本研究评估医学院学生健康和生活方式行为的变化。对象和方法:在一项纵向研究中,学生在医学院开始和结束时都进行了评估。在临床研究中心测量人体测量、代谢和生活方式变量。数据收集于2006 - 2011年,2013-2014年使用SAS 9.3版本进行分析。使用Pearson相关性来评估变量之间的关联,并使用广义线性模型来测量随时间的变化。结果:78%(97/125)的参与者完成了两次访问。基线时,除了舒张压升高(P = 0.01)、高密度脂蛋白-胆固醇升高(P < 0.001)和胰岛素升高(P < 0.001)外,平均人体测量值和临床测量值处于或接近健康值,并且没有随时间变化。自我报告的饮食和体育活动习惯与国家目标一致,除了维生素D和钠。除了碳水化合物(占总能量的百分比)(P < 0.001)和钠(P = 0.04)减少,脂肪(占总能量的百分比)和维生素D (P < 0.01)增加外,饮食摄入量没有随时间变化。心血管健康呈下降趋势,自我报告的体力活动呈增加趋势(P < 0.001)。结论:医学院学生临床指标和生活方式行为总体健康;然而,一些学生表现出心脏代谢风险,饮食和活动习惯与国家建议不一致。包括个人健康和生活方式评估在内的课程可以激励学生采取更健康的做法,并成为患者的榜样。
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引用次数: 30
Scalpel Depigmentation and Surgical Crown Lengthening to Improve Anterior Gingival Esthetics. 手术刀脱色和手术冠延长改善前牙龈美观。
Pub Date : 2016-11-01 DOI: 10.4103/amhsr.amhsr_442_12
K C Chethana, K Pradeep

A smile is a mesmerizing expression of joy, success, courtesy and reveals self-confidence. The harmony of the smile is determined not only by the shape, position and the color of teeth, but also by the gingival architecture. Gingival tissues form an important part of what we can consider to be a pleasing smile. The elegance of this pleasant smile could be, affected by highly pigmented gingiva. This gingival pigmentation occurs as a result of melanin granules, which are produced by melanoblast. Although melanin pigmentation does not present a medical problem, demand for cosmetic therapy is commonly sort by people with moderately pigmented gingiva. This case report highlights, a case of excessive gingival display and hyperpigmentation treated with anterior crown lengthening and gingival depigmentation using the scalpel technique.

微笑是喜悦、成功、礼貌和自信的迷人表达。微笑的和谐不仅取决于牙齿的形状、位置和颜色,还取决于牙龈的结构。牙龈组织是一个重要的组成部分,我们可以认为是一个令人愉快的微笑。这令人愉快的微笑的优雅可能是受高度着色的牙龈的影响。这种牙龈色素沉着是由黑色素细胞产生的黑色素颗粒的结果。虽然黑色素色素沉着不是一个医学问题,但对美容治疗的需求通常是由中度牙龈色素沉着的人来分类的。本病例报告强调了一例使用手术刀技术治疗前冠延长和牙龈色素沉着治疗牙龈过度显示和色素沉着。
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引用次数: 2
Emerging Trends in the Epidemiological Pattern of Head and Neck Cancers in Lagos, Nigeria. 尼日利亚拉各斯头颈癌流行病学模式的新趋势。
Pub Date : 2016-09-01 DOI: 10.4103/amhsr.amhsr_30_16
O A Erinoso, E Okoturo, O M Gbotolorun, O A Effiom, N A Awolola, S S Soyemi, R T Oluwakuyide

Background: Unfortunately, despite an increase in medical knowledge, survival rates of head and neck cancers (HNCs) have not been observed to improve greatly. This is true, especially in tumors located in obscure primary sites or late presentation.

Aim: The purpose of this study is to assess the epidemiologic pattern of HNCs and to evaluate its emerging trends and patterns in Lagos state.

Subjects and methods: A retrospective study was conducted from 2003 to 2013 that analyzed histologically diagnosed cases of HNC at the Pathology Departments of the two tertiary teaching hospitals in Lagos. Data analysis was performed using the Statistical Package for the Social Sciences (version 20) statistical software.

Results: One thousand and eighty-three cases of head and neck malignancies were recorded. A female: male ratio of 1.01:1 was reported with mean age of 39.6 (standard deviation 21.1) years. The oral cavity was the most affected anatomic site (21.2%, 230/1083) in the period under review. Malignant epithelial tumors accounted for 72% (779/1083) of cases seen. Carcinomas were the most common histological variant seen (67%, 726/1083) and squamous cell carcinoma accounted for 58% (421/726) of carcinomas recorded. Oral cavity malignancies (21.8%, 118/540) were the most common in males while thyroid malignancies (28.5%, 155/543) were the most seen in females. In children (≤15 years), the most common histologic findings were carcinomas (42.3%; 77/182) and retinoblastomas (23.6%; 43/182).

Conclusion: Epithelial malignancies were the most common malignancy in the study, and the oral cavity appears to be the increasingly predominant site for HNCs. A changing pattern in gender predominance, age distribution, and frequency with histological variants and anatomical sites was also observed in this study.

背景:不幸的是,尽管医学知识有所提高,头颈癌(HNCs)的生存率并没有明显提高。这是正确的,尤其是原发部位不明显或出现较晚的肿瘤。目的:本研究的目的是评估拉各斯州HNCs的流行病学模式,并评估其新出现的趋势和模式。研究对象和方法:回顾性研究2003年至2013年在拉各斯两所三级教学医院的病理科室进行的HNC病理诊断病例分析。使用Statistical Package for the Social Sciences (version 20)统计软件进行数据分析。结果:共记录头颈部恶性肿瘤1383例。男女比例为1.01:1,平均年龄39.6岁(标准差21.1)。口腔是受影响最大的解剖部位(21.2%,230/1083)。恶性上皮肿瘤占全部病例的72%(779/1083)。癌是最常见的组织学变异(67%,726/1083),鳞状细胞癌占58%(421/726)。男性以口腔恶性肿瘤(21.8%,118/540)多见,女性以甲状腺恶性肿瘤(28.5%,155/543)多见。在儿童(≤15岁)中,最常见的组织学表现是癌(42.3%;77/182)和视网膜母细胞瘤(23.6%;43/182)。结论:上皮恶性肿瘤是研究中最常见的恶性肿瘤,口腔似乎是HNCs的主要发病部位。在本研究中还观察到性别优势、年龄分布和频率随组织学变异和解剖部位的变化模式。
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引用次数: 14
Awareness and Attitudes toward Organ Donation in Rural Puducherry, India. 印度农村地区对器官捐献的认识和态度。
Pub Date : 2016-09-01 DOI: 10.4103/amhsr.amhsr_63_15
K L Balajee, N Ramachandran, L Subitha

Background: For many of the end-stage organ diseases, organ transplantation is the most preferred treatment. The need for the organ transplantation is higher than the availability. For the transplantation program to be successful, awareness regarding organ donation is needed and people must have a positive attitude toward donating organs.

Aim: This study aims to assess the awareness and attitudes regarding organ donation among the rural population and to evaluate the sociodemographic factors associated with their awareness.

Subjects and methods: This community-based cross-sectional study was conducted among 360 people living in 4 villages of Puducherry. Face-to-face interviews were carried out using pretested questionnaire, which included the sociodemographic data. Data were entered into Excel and analyzed using Statistical Package for Social Sciences.

Results: Of 360 participants, 88% (317/360) were aware of organ donation. Among these 317 participants, awareness was highest in the age group 18-30 years 98.8% (87/88), male 91% (147/161), higher secondary and above 100% (58/58), and Class 1 socioeconomic status 92% (13/14). Source of awareness about organ donation was primarily through media 83% (263/317). The majority of the participants 88% (281/317) felt that the purpose of organ donation was to save life. Most of the participants 91% (290/317) said that all healthy adults are eligible organ donors and 87% (275/317) of the participants said that monetary benefits could not be accepted for organ donation. Most of the participants 70% (223/317) were willing to donate their organs after death. Among the participants who refused to donate their organs, family refusal 57% (25/44) was the most common reason.

Conclusion: This study shows that there is a high level of awareness about organ donation among rural people and most of the participants are willing to donate their organs.

背景:对于许多终末期器官疾病,器官移植是首选的治疗方法。器官移植的需求大于可获得性。器官移植项目要想成功,需要有器官捐赠的意识,人们必须对捐赠器官有积极的态度。目的:本研究旨在了解农村人口对器官捐献的认知和态度,并分析与之相关的社会人口学因素。研究对象和方法:本研究以社区为基础,对普杜切里4个村庄的360人进行了横断面研究。面对面访谈采用预测问卷,其中包括社会人口统计数据。将数据输入Excel并使用Statistical Package for Social Sciences进行分析。结果:360名参与者中,88%(317/360)的人知道器官捐赠。在这317名参与者中,18-30岁年龄组的意识最高,为98.8%(87/88),男性为91%(147/161),高中及以上为100%(58/58),社会经济地位为1级的为92%(13/14)。83%(263/317)的人对器官捐赠的认识主要来自媒体。88%(281/317)的受访者认为器官捐献的目的是为了挽救生命。91%(290/317)的参与者认为所有健康的成年人都是合格的器官捐赠者,87%(275/317)的参与者认为器官捐赠不能接受金钱利益。大多数参与者(223/317)表示愿意在死后捐献自己的器官。在拒绝捐献器官的参与者中,家庭拒绝是最常见的原因,占57%(25/44)。结论:本研究表明农村居民对器官捐献有较高的意识,大多数参与者都愿意捐献器官。
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引用次数: 26
Peripheral and Central Nervous System Involvement in Recently Diagnosed Cases of Hypothyroidism: An Electrophysiological Study. 最近诊断的甲状腺功能减退病例累及外周和中枢神经系统:一项电生理研究。
Pub Date : 2016-09-01 DOI: 10.4103/amhsr.amhsr_39_16
N Gupta, M Arora, R Sharma, K S Arora

Background: Hypothyroidism, one of the most common endocrine disorders, may induce neurological abnormalities at an early stage of the disease.

Aim: The study was designed to assess the electrophysiological alterations of some selected variables of nerve conduction, brainstem auditory evoked potentials (BAEPs), and visual evoked potentials (VEPs) in hypothyroid patients.

Subjects and methods: Sixty patients of newly diagnosed hypothyroidism and an equal number of age-matched controls were selected for the study. Nerve conduction studies that included parameters as latencies, conduction velocities, and amplitude of motor nerves, i.e., median, ulnar, common peroneal, tibial nerve, and sensory nerves, i.e., median and sural nerves was performed in both hypothyroid patients and controls. Further, BAEPs and VEPs of all the patients were done. The data were compiled and statistically analyzed using Student's unpaired t-test to observe any electrophysiological alterations in hypothyroid patients as compared to healthy controls.

Results: On comparative evaluation, statistically significant increase in latency of median, ulnar, tibial, and sural nerves; decrease in conduction velocities of all the tested nerves and decrease in amplitude of median, tibial, and sural nerves was observed in hypothyroid patients. Statistically significant increase in latencies, interpeak latencies, and decrease in amplitudes of BAEP waves and statistically significant increase in P100 latency of VEP was seen in hypothyroid patients.

Conclusion: The results of our study suggest that peripheral and central neuropathy develops in patients of hypothyroidism at an early stage of disease and the electrophysiological investigations of such patients can help in timely detection and treatment of neurological disorders that occur due to thyroid hormone deficiency.

背景:甲状腺功能减退是最常见的内分泌疾病之一,可在疾病早期引起神经系统异常。目的:研究甲状腺功能减退患者神经传导、脑干听觉诱发电位(BAEPs)、视觉诱发电位(VEPs)等部分电生理指标的变化。对象和方法:选择60例新诊断的甲状腺功能减退症患者和相同数量的年龄匹配的对照组进行研究。在甲状腺功能减退患者和对照组中进行神经传导研究,包括运动神经,即正中神经、尺神经、腓总神经、胫神经和感觉神经,即正中神经和腓肠神经的潜伏期、传导速度和振幅等参数。并对所有患者进行baep和vep测定。对数据进行汇编和统计分析,使用学生的非配对t检验来观察甲状腺功能减退患者与健康对照组相比的任何电生理变化。结果:经比较评价,正中神经、尺神经、胫神经、腓肠神经潜伏期增高有统计学意义;甲状腺功能减退患者的神经传导速度下降,正中神经、胫神经和腓肠神经的振幅下降。甲状腺功能减退患者的潜伏期、峰间潜伏期和BAEP波幅均有统计学意义的增加,VEP的P100潜伏期有统计学意义的增加。结论:我们的研究结果提示,甲状腺功能减退患者的周围和中枢神经病变发生在疾病的早期,对这些患者进行电生理检查有助于及时发现和治疗甲状腺激素缺乏症引起的神经系统疾病。
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引用次数: 32
Color Stability of Heat-cure Acrylic Resin Subjected to Simulated Short-term Immersion in Fast-acting Denture Cleansers. 热固化丙烯酸树脂在速效义齿清洁剂中模拟短期浸泡的颜色稳定性。
Pub Date : 2016-09-01 DOI: 10.4103/amhsr.amhsr_64_16
K Lohitha, M Prakash, A Gopinadh, A J Sai Sankar, C H Sandeep, B Sreedevi

Background: Regular usage of denture cleansers is recommended in complete denture wearers for effective plaque control, and these cleansers alter the physical properties of acrylic resin over a period of time. Thus, an in vitro study was carried out to assess the effect of denture cleansers on the color stability of heat-cure denture base resin.

Aim: The aim of the present study was to evaluate the effect of commercially available fast-acting denture cleansers on the color stability of heat-cure denture base resin at different time intervals.

Materials and methods: Thirty-six heat-cure acrylic resin (Ivoclar Triplex Hot-V) specimens are randomly allocated into four groups - Group A (distilled water as control); Group B (polident - 3 min); Group C (fixodent scope plus); and Group D (stain away plus) comprising of nine samples each. After recording the baseline values, the specimens were immersed in their respective cleansing solutions for a prescribed time interval. This procedure was repeated daily, and the color change (ΔE) was evaluated after 90 and 180 days interval using a colorimeter in a standard "Commission International de l'Eclairage" color system.

Statistical analysis used: Paired t-test and Dunnett's T3 test.

Results: All the groups exhibited a variable color change (ΔE) for an immersion period of 90 days. However, significant color differences (P = 0.001) were noticed among the test groups after 180 days.

Conclusion: The color change of denture base resin was greater for Group D followed by Groups B, C, and A respectively after 180 days of immersion. The ΔE values of all test groups increased with time.

背景:建议全口义齿佩戴者定期使用义齿清洁剂,以有效控制牙菌斑,这些清洁剂在一段时间内改变丙烯酸树脂的物理性质。因此,我们在体外研究了义齿清洁剂对热固化义齿基托树脂颜色稳定性的影响。目的:评价市售速效义齿清洁剂在不同时间间隔对热固化义齿基托树脂颜色稳定性的影响。材料和方法:36个热固化丙烯酸树脂(Ivoclar Triplex Hot-V)样品随机分为四组:A组(蒸馏水为对照);B组(麻醉- 3分钟);C组(固定范围+);D组(免染组),每组9个样品。记录基线值后,将标本浸泡在各自的清洁溶液中一段规定的时间间隔。每天重复这一过程,并在90天和180天后使用标准“Commission International de l’eclairage”颜色系统中的色度计评估颜色变化(ΔE)。统计分析采用配对t检验和Dunnett’s T3检验。结果:浸泡90天后,各组均呈现不同的颜色变化(ΔE)。然而,180天后,实验组之间存在显著的颜色差异(P = 0.001)。结论:浸泡180 D后,D组义齿基托树脂颜色变化最大,B、C、A组次之。各试验组ΔE值均随时间增加而升高。
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引用次数: 9
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Annals of Medical and Health Sciences Research
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