根龋及其危险因素的逐步回归分析

目的 考察根龋发病的危险因素。方法 应用逐步回归分析法对14个指标与根龋的龋补牙数(DFT)和龋补牙面数(DFS)进行多因素逐步回归分析。结果 牙龄萎缩、菌斑指数、年龄、吃甜食习惯与DFT显著相关，P＜0．05；牙龈萎缩、菌斑指数、年龄与DFS显著相关，P＜0．05。结论 牙龈萎缩、菌斑指数、年龄、吃甜食习惯对根龈的发生有显著影响。这对老年根龋防治有指导作用。     

老年人根面龋相关危险因素分析及列线图预测模型构建

目的:分析老年人发生根面龋的相关危险因素并构建列线图预测模型。方法:选取2019年9月～2021年9月来我院口腔科就诊的232例60岁以上老年患者为研究对象,其中64例根面龋患者为研究组,其他168例患者为对照组。收集两组患者的临床资料,分析发生根面龋的相关因素;绘制受试者工作特征(ROC)曲线,分析计量指标对根面龋发病的预测价值;Logistic多元回归模型分析影响根面龋发病的危险因素;R语言软件4.0“rms”包构建预测根面龋发病的列线图模型,校正曲线对列线图模型进行内部验证,决策曲线对列线图模型进行临床预测效能评估。结果:与对照组相比,研究组患者年龄较大、食物嵌塞及牙龈退缩比例较高、刷牙频率较低、菌斑指数较高(P<0.05)。年龄、刷牙频率、菌斑指数的AUC分别为0.864、0.853、0.810,最佳截断值分别为66岁、1次、1分。年龄、食物嵌塞、牙龈退缩、刷牙频率、菌斑指数是老年人根面龋的独立危险因素。内部验证结果显示,列线图模型预测老年人根面龋发生的一致性指数(C-index, C指数)为0.783(95%CI 0.634～0.826),校准曲线趋于理想曲线。列线图模...     

门诊患者根面龋危险因素的Logistic回归分析

目的：探讨引起门诊口腔患者根面龋的危险因素。方法：对根面龋危险因素作出相关性的分析。应用Logistic回归分析方法研究根面龋与危险因素之间的数量关系。结果：牙龈退缩、菌斑指数、放疗指数与年龄是根面龋产生的危险因素。根面龋的发病情况用Logistic回归分析计算结果判别的总正确率为93．24％。结论：牙龈退缩、口腔卫生、放疗与年龄是导致根面龋的危险因素。     

老年人根面龋相关因素及治疗效果的评价

目的探讨老年人根面龋的相关因素,并了解Fuji Ⅸ GP玻璃离子水门汀对根面龋的治疗效果,为根面龋的预防和治疗提供科学的依据.方法口腔科门诊就诊的根面龋患者214例312颗牙为研究对象,每位患者填写问卷调查表,了解患病相关因素,并用Fuji Ⅸ玻璃离子充填治疗后每隔半年复诊.结果①影响根面龋发病的主要相关因素是牙龈退缩、菌斑指数和年龄.② Fuji Ⅸ玻璃离子充填治疗6、12、18个月后的成功率为92.63%、87.42%、85.97%.结论老年人应采取综合措施预防根面龋;Fuji Ⅸ玻璃离子治疗根面龋有一定临床应用价值.     

两种材料治疗老年人根面龋的疗效观察

老年人由于牙龈萎缩和长期佩戴假牙压迫牙龈组织等原因,易造成根面龋损,根面龋是中老年人常见的口腔疾患之一,根据调查:老年人根面龋患病率在35%左右,随着年龄的增长发病率升高.给老年患者造成进食和生活上的困难,降低了生活质量.笔者将近几年临床诊断为老年人根面龋的牙齿,分别采用两种材料进行临床充填治疗,并对其近期疗效进行观察,现报道如下.     

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目的初步探讨广东省从化市社区老年人根面龋发生的危险因素,为社区老年人根面龋的预防提供相关的信息支持。方法本研究于2012年10月至2013年3月采用病例对照研究方法进行。根据研究对象纳入标准,将广东省从化市街口镇276名60～80岁社区老年人分为病例组（85人）和对照组（191人）,两组的年龄、性别和居住社区分布差异无统计学意义（P〉0．05）。收集所有研究对象的根面龋检查和问卷调查信息,分析社区老年人发生根面龋的危险因素。结果Logistic回归分析显示,刷牙频率≤1次／d、有活动义齿和进食后塞牙是社区老年人发生根面龋的危险因素。结论应加强社区老年人的口腔健康教育,促进良好口腔健康行为形成,以减少根面龋发生。     

氯化镧漱口水防治老年根面龋三年临床观察

目的:观察和评价氯化镧(LaCl3)漱口水防治老年根面龋的临床效果.方法:选择63～84岁患有牙龈萎缩根面暴露的老年人222名,随机分为实验组和对照组,每组均按常规方法记录牙龈退缩数和根面龋补数,实验组每日使用一次500×10-6mmol/L的含La3 漱口水漱口,对照组使用NaCl漱口水漱口,两组均使用1个月、1年及2年后重复使用漱口水1个月,3年后复查每个老年人根面龋情况.结果:实验组根龋指数(RCI)的新增值明显低于对照组.结论:500×10-6 mmol/L的含La3 漱口水能有效地控制老年根面龋.     

老年根面龋患者菌斑致病菌分析

根面龋是老年人的口腔常见病 ,是老年口腔疾病防治的重要内容之一。关于根面龋致病菌国内外尚有争议。我们于 1999年 12月～ 2 0 0 0年 2月对临床患根面龋老年人的局部菌斑进行分离、培养、鉴定 ,找出优势菌 ,旨在为根面龋防治提供参考。一、材料和方法1.材料 :试验组 :年龄 6 0～ 77岁、患根面龋无牙髓及根尖炎症者 15例 ;对照组 ;根外露 ,无根面龋者 10例。2 .方法 :从试验组患者根面龋洞内或对照组根邻面取菌斑后送实验室。标本经振荡稀释后分别接种于ＣＤＣ非选择培养基、轻唾培养基、乳酸杆菌和放线菌选择培养基上。ＣＤＣ培养基和放线…     

光固化玻璃离子水门汀充填老年人根面龋的体会

在口腔疾病中,尤其老年人唾液分泌少,牙龈萎缩容易患根面龋.其诊断标准:(1)在牙龈退缩的根面上有浅黄色或褐色染色,探粗涩为活动龋,光滑的为静止龋,(2)在牙龈退缩的根面上有黄褐色或棕黑色龋洞[1].目前还没有专门针对根面龋的特别有效的处理方法.除了用冠龋的方法外,还需结合根部的状况加以处理.根面龋沿颈缘线的位置呈环形向根部、近远中发展,如处理不当会发展很快,甚至冠折.     

含氟、镧漱口水防治老年人根面龋的临床研究

目的:比较和评价单独或交替使用氟(NaF)与镧(LaC l3)漱口水对老年人根面龋防治的临床效果。方法:选择60~84岁有牙龈萎缩、根面暴露的418名老年人,随机分为NaF组、LaC l3组、NaF+LaC l3组和对照组。每组老年人均按临床常规方法记录牙龈退缩数和根面龋补数后,各实验组及对照组病人每天使用1次含各自微量元素的漱口水或安慰剂漱口水1个月,第10个月和第20个月时再同样重复使用1个周期,30个月后复查每个老年人根面龋的情况。结果:单独或交替使用含5×10-4mmol/L的F-或La3+的漱口水,可使老年人的根面防龋能力分别提高68.1%、65.5%和87.7%,结论:在老年人根面龋的防治中,交替应用含氟与镧漱口水较单独使用含其中任何一种防龋微量元素的漱口水效果更好。     

Dental diseases in a Jordanian population on renal dialysis.

OBJECTIVE: The aim of this study was to examine the levels of periodontal disease and dental caries in individuals on renal dialysis in a Jordanian population. METHOD AND MATERIALS: A total of 47 individuals (mean age = 42.9 years, standard deviation [SD] 12.5) were examined for plaque deposits, gingivitis, periodontitis, and dental caries using the Silness and L?e plaque index (PII), L?e and Silness gingival index (GI), probing pocket depth (PPD), and decayed, missing, or filled teeth (DMFT), respectively. Gingival recession also was recorded using the distance from the cementoenamel junction to the gingival margin. Patients were categorized into three subgroups based on their renal dialysis histories: on dialysis for less than 1 year; on dialysis for 1 to 3 years; or on dialysis longer than 3 years. RESULTS: There were no statistically significant differences in PII, GI, PPD, and gingival recession among the three subgroups examined. The GI revealed that 55% scored more than 2, indicating moderate to severe gingivitis. None of the individuals in this study displayed an absence of gingival inflammation. DMFT index showed that there were statistically significant differences between subjects on renal dialysis for less than 1 year and subjects on dialysis for 1 to 3 years and more than 3 years. The group DMFT index mean was 8.5 (SD 2.88). CONCLUSION: Gingival and dental diseases are prevalent in the renal dialysis population. The dental community's awareness of the implication of poor oral health within this population should be elevated and daily oral health maintenance should be reinforced by the dialysis team.     

Gingival recession: epidemiology and risk indicators in a university dental hospital in Turkey

Abstract: Objective: Gingival recession is a common manifestation of periodontal disease, but is also associated with several risk factors. In this study, we investigated prevalence of gingival recession and assessed various risk indicators in a university dental hospital in Turkey. Materials and methods: The study group consisted of 831 persons (537 females, 294 males). Gingival recession, dental plaque, calculus, tobacco consumption, toothbrushing frequency, traumatic toothbrushing and high frenum were assessed. Gingival recession scored as present whenever the free gingival margin was apical to the cemento‐enamel junction and root surface was exposed. Results: Overall, the prevalence of gingival recession was 78.2%. The gingival recession for buccal surfaces measured approximately between 1 and 2 mm was 17.4%. The number of gingival recession site of male subjects was significantly higher than that of the female ones (P < 0.05). The dental calculus and plaque levels of mandibular teeth were significantly higher than those of the maxillary teeth (P < 0.05). The multiple regression analyses showed that age, smoking duration, traumatic toothbrushing and high frenum are significant contributors to gingival recession. Conclusions: Periodontal condition is very high in this population. High level of gingival recession in this population is significantly associated with a high level of dental plaque and calculus, male gender, smoking duration, toothbrushing frequency, traumatic toothbrushing and high frenum.     

正畸治疗对牙龈萎缩的影响

目的：研究年轻成人中牙龈萎缩的比例，并探讨与正畸治疗的关系。方法：在大学生中随机抽取806名学生，记录年龄、是否抽烟、有无正畸治疗史。临床检查包括牙龈炎症，菌斑情况和牙龈萎缩的状况。分析牙龈萎缩与其他因素间的关系。结果：14．6％的学生有不同程度的牙龈萎缩，接受过正畸治疗学生的牙龈萎缩的比例明显高于无正畸治疗的学生，牙龈萎缩与性别、抽烟没有关系。结论：部分年轻成人有牙龈萎缩，有正畸治疗史的个体牙龈萎缩的比例比没有正畸治疗史的高。     

The etiology and prevalence of gingival recession

BACKGROUND: Gingival recession in its localized or generalized form is an undesirable condition resulting in root exposure. The result often is not esthetic and may lead to sensitivity and root caries. Exposed root surfaces also are prone to abrasion. The purpose of this article is to describe the prevalence, etiology and factors associated with gingival recession. TYPES OF STUDIES REVIEWED: The authors reviewed cross-sectional epidemiologic studies of gingival recession and found that they correlated the prevalence of recession to trauma, sex, malpositioned teeth, inflammation and tobacco consumption. The recent surveys they reviewed revealed that 88 percent of people 65 years of age and older and 50 percent of people 18 to 64 years of age have one or more sites with recession. The presence and extent of gingival recession also increased with age. RESULTS: More than 50 percent of the population has one or more sites with gingival recession of 1 mm or more. The prevalence of gingival recession was found in patients with both good and poor oral hygiene. It has been proposed that recession is multifactorial, with one type being associated with anatomical factors and another type with physiological or pathological factors. Recession has been found more frequently on buccal surfaces than on other aspects of the teeth. CLINICAL IMPLICATIONS: Dentists should be knowledgeable about the etiology, prevalence and associating factors of gingival recession, as well as treatment options, so that appropriate treatment modalities can be offered to patients. Treatments for gingival recession include gingival grafting, guided tissue regeneration and orthodontic therapy. Such treatments typically result in esthetic improvement, elimination of sensitivity and a decreased risk of developing root caries.     

正畸治疗中的牙龈退缩

牙龈退缩作为正畸治疗中常见的并发症,不仅会引起牙根部牙本质敏感,牙颈和牙根部龋坏,牙周支持丧失,食物嵌塞,还会严重影响患者的容貌美观。牙龈退缩是多因素共同作用的结果,好发于前牙区和颌骨左侧,共分4度,50％以上的健康人群均可发病,退缩程度随着人的年龄增加而加重。其治疗首选非手术方法,即在正畸治疗过程中和治疗结束后注意炎症的控制,调殆,去除食物嵌塞发病因素;手术治疗主要有软组织移植术和引导组织再生术,前者通过皮瓣移植,后者促进牙周软硬组织的再生;若非手术和手术方法均不能有效地实现牙龈生理性重建,则可以采用修复方法对其进行掩饰性治疗,即人工龈修复。     

Do Root Lesions Tend to Develop in the Same People Who Develop Coronal Lesions?

Objectives : The three purposes of this study are to: (1) describe the relationship between the prevalence of coronal caries and root caries; (2) describe the relationship between the three-year incidence of coronal caries and root caries; and (3) if the two conditions are associated, develop a multiple regression model that identifies characteristics distinguishing people who had increments of both root caries and coronal caries from people who had increments of either coronal caries or root caries, or who had no new caries. Methods : Dental examinations and interviews were conducted in the homes of a randomly selected, stratified sample of people over the age of 65 years in five North Carolina counties. The relationships between coronal and root D and DF were analyzed through contingency table analyses, and ordinal logistic regression was used to identify characteristics that differentiated people who had both coronal and root D over the three years from people who had either coronal or root D and people who had no new disease. Results : Evidence of root and coronal caries in whites was much more likely to be in the form of fillings, while for blacks, it was more likely to be in the form of untreated decay. Prevalence rates of coronal and root D and DF were significantly associated for both blacks and whites. Incidence rates based on DF indicated that root and coronal caries were not associated in whites, but were associated in blacks. People more likely to experience both types of caries had more gingival recession at baseline, greater average attachment loss over the three years, and lactobacilli at baseline. In addition, the presence of Porphymonas gingivalis at three years was important for whites. Conclusion : It appears that coronal and root caries do tend to appear together in the same individuals, but fillings attenuate that relationship. The impact of dental treatment on the epidemiology of dental caries appears to be considerable and calls into question whether the F component of the caries index is related to disease as defined by epidemiologic criteria.     

Analysis of modified laterally positioned flap

The aim of this study was to investigate the effects of the covering of denuded root surfaces by the use of modified laterally positioned flap (MLPF) and application of supersaturated citric acid of pH 1. The following measurements were carried out: the width of attached gingiva, attachment of epithelium level, gingival recession, and plaque and gingival indices. The surface area of the exposed root was also measured. All measurements were made before MLPF and one, three, six and twelve months after the treatment. The average surface area of the gingival recession before surgery was 15.75 mm2 and one year after the treatment 4.20 mm2. This means that 73.30% of the denuded surfaces were covered. After the application of MLPF there was a statistically significant decrease of dental plaque index values and of gingival index values. The epithelium attachment was on the coronal level. Gingival recession was significantly decreased. The width of attached gingiva was statistically increased. It can be concluded that MLPF after the application of citric acid is a useful surgical procedure in the covering of denuded root surfaces.     

Relationship of oral hygiene and sugar consumption to risk of caries in children

Abstract The associations of denial caries with poor oral hygiene and high sugar consumption were analyzed taking into account possible confounding and factor interaction. The series consisted of 543 children from low-fluoride areas (0.10–0.46 parts/10⁶), aged 5, 9 and 13 years Plaque accumulation and sugar consumption were slightly confounded throughout the observations. Effect-modification appeared to exist, since the effect of one factor was greater at higher levels of the other. The association between the amount of plaque and dental caries was statistically significant at all levels of sugar consumption. With increasing total sugar consumption the risk of caries increased significantly only when oral hygiene was simultaneously poor. Effect estimates (E) and attributable risk estimates (AR) were calculated for increased plaque accumulation and sugar consumption. For the total sets of tooth surfaces in the various age groups the proportions of the total caries load associated with increased plaque accumulation were 35.2–63.0%, and those associated with higher total sugar consumption 0.7–5.4%. The fractions varied greatly with the tooth group. The effect estimates for the two factors in combination were always greater than the sums of the separate effects, indicating synergistic interaction between the two caries determinants.