Haavikko法推断南京地区儿童牙龄的应用初探
发布时间：2019-04-19 14:23
【摘要】：在儿童口腔科的临床工作中,判断牙胚的发育程度对治疗计划的制定十分重要。本研究在应用Haavikko法系统的基础上,利用全口牙位曲面体层X线片进行南京地区儿童牙龄的推断。本研究包括了三个部分的内容,分别为正常儿童样本的研究、先天缺牙儿童样本的研究以及乳牙根尖周炎儿童样本的研究。 研究目的 评估Haavikko法测定南京地区儿童自然年龄的适用性,研究牙龄与自然年龄的关系,为该方法在我国儿童牙龄估算中的应用提供参考；探究先天缺牙对患儿存留牙发育速度的影响和缺牙个数与存留牙发育程度的关系；研究乳牙根尖周炎与本地儿童恒牙胚发育速度的关系和炎症侵及范围对恒牙胚发育速度的影响。 材料和方法 本研究收集了符合要求的南京市正常儿童全口牙位曲面体层X线片629张(其中男童392例,女童237例),先天缺牙儿童140张(其中男童77例,女童63例),乳牙根尖周炎儿童167张(其中男童105例,女童62例)按照Haavikko法对左下颌7颗恒牙发育分期进行判读,查表计算得出牙龄,将所得牙龄与自然年龄进行配对t检验,并建立南京地区儿童牙龄与自然年龄间关系的数学模型；利用实验得出的适用于本地儿童的公式计算出牙龄,将先天缺牙患儿和正常对照组儿童的牙龄和年龄的差值做配对t检验,并将差值作Spearman秩相关检验；将乳牙根尖周炎患儿和正常对照组儿童的牙龄和年龄差值做配对t检验,按炎症侵及的范围分组重复上述实验。 结果 运用Haavikko法算得南京地区男童牙龄比自然年龄平均低估0.6年,女童牙龄比自然年龄平均低估1.0年,该差异有统计学意义(P0.05)。建立南京地区儿童牙龄与自然年龄相关的数学模型,得到自然年龄与牙龄的拟合曲线方程。 先天缺牙儿童存留牙发育平均落后正常儿童0.44年,差异有统计学意义(P0.05),少数牙先天缺失患儿存留牙发育平均滞后0.41年,多数牙先天缺失患儿存留牙发育平均滞后0.92年。缺牙数与先天缺牙组牙龄减自然年龄值相关系数为-0.220,显著相关。 乳牙根尖周炎儿童牙龄与正常对照组差异无统计学意义,受炎症累及的继承恒牙胚牙龄与正常对照组间的差异有统计学意义,发育程度平均滞后0.59年。炎症侵及继承恒牙胚牙囊者,牙龄较正常对照组延迟0.58年。 结论 基于Haavikko法研究并建立了南京市儿童的牙龄与自然年龄间关系的数学模型,经验证所求的年龄与自然年龄间无统计学差异,其结果可用于对本地儿童牙龄及自然年龄的计算。 先天缺牙患儿存留牙发育较正常儿童迟缓,缺牙数与存留牙发育迟缓程度呈显著正相关。 乳牙根尖周炎会造成其继承恒牙胚发育延迟,平均延迟0.59年。
[Abstract]:In the clinical work of pediatric stomatology, it is very important to judge the degree of tooth germ development to make the treatment plan. In this study, based on the Haavikko method, the dental age of children in Nanjing area was estimated by using the whole tooth position surface X-ray film. This study includes three parts: normal children samples, congenital tooth deficiency children samples and deciduous teeth periapical children samples. Objective to evaluate the applicability of Haavikko method in determining the natural age of children in Nanjing and to study the relationship between dental age and natural age in order to provide a reference for the application of this method in the estimation of children's dental age in China. To investigate the effect of congenital tooth deficiency on the development rate of retained teeth and the relationship between the number of teeth missing and the degree of development of retained teeth. To study the relationship between periapical periodontitis of deciduous teeth and the development rate of permanent tooth germ in local children and the effect of the extent of inflammation on the development rate of permanent tooth germ. Materials and methods A total of 629 X-ray films (392 boys, 237 girls) and 140 congenital tooth defects (77 boys and 63 girls) were collected from normal children in Nanjing. Children with periapical periodontitis of deciduous teeth, including 105 boys and 62 girls, were divided into 7 permanent teeth of left mandible according to Haavikko's method. The age of teeth was calculated, and the age of teeth was matched with natural age by t-test. The mathematical model of the relationship between dental age and natural age of children in Nanjing area was established. The age of teeth was calculated by the formula suitable for local children. The difference of tooth age and age between children with congenital tooth deficiency and normal children was tested by paired t-test, and the difference was tested by Spearman rank correlation test. The age and age difference between children with periapical periodontitis of deciduous teeth and normal controls were tested by paired t-test and repeated according to the extent of inflammatory invasion. Results the average age of teeth in Nanjing area was 0.6 years lower than that of natural age, and that of girls was 1.0 years. The difference was statistically significant (P0.05). Results Haavikko method was used to calculate the average age of teeth in Nanjing area was 0.6 years lower than that of natural age (P0.05). A mathematical model of the relationship between natural age and dental age of children in Nanjing area was established, and the fitting curve equation of natural age and dental age was obtained. The average development of retained teeth in children with congenital tooth deficiency was 0.44 years, the difference was statistically significant (P0.05). The development of retained teeth in a small number of children with congenital absence of teeth was 0.41 years behind, on average, there was a significant difference between the two groups. The development of remaining teeth in most children with congenital loss of teeth was 0.92 years. The correlation coefficient between the number of teeth missing and the natural age of congenital tooth deficiency group was-0.220, which was significantly correlated with that of the congenital tooth deficiency group. There was no significant difference in tooth age between children with periapical periodontitis of deciduous teeth and normal control group, but there was significant difference between the age of inherited permanent tooth germ affected by inflammation and that of normal control group, and the average development degree was 0.59 years behind. The age of the tooth was delayed 0.58 years in the patients with inflammatory invasion of the permanent tooth sac as compared with that in the normal control group. Conclusion A mathematical model of the relationship between dental age and natural age of children in Nanjing was established based on Haavikko method, and there was no statistical difference between the age and natural age. The results can be used to calculate the dental age and natural age of local children. The development of retained teeth in children with congenital tooth deficiency was slower than that in normal children, and there was a significant positive correlation between the number of teeth missing and the degree of remaining tooth growth retardation. Periapical periodontitis of deciduous teeth causes delayed development of inherited permanent tooth germ, with an average delay of 0.59 years.
【学位授予单位】：南京医科大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：R788
本文编号：2461024
[Abstract]:In the clinical work of pediatric stomatology, it is very important to judge the degree of tooth germ development to make the treatment plan. In this study, based on the Haavikko method, the dental age of children in Nanjing area was estimated by using the whole tooth position surface X-ray film. This study includes three parts: normal children samples, congenital tooth deficiency children samples and deciduous teeth periapical children samples. Objective to evaluate the applicability of Haavikko method in determining the natural age of children in Nanjing and to study the relationship between dental age and natural age in order to provide a reference for the application of this method in the estimation of children's dental age in China. To investigate the effect of congenital tooth deficiency on the development rate of retained teeth and the relationship between the number of teeth missing and the degree of development of retained teeth. To study the relationship between periapical periodontitis of deciduous teeth and the development rate of permanent tooth germ in local children and the effect of the extent of inflammation on the development rate of permanent tooth germ. Materials and methods A total of 629 X-ray films (392 boys, 237 girls) and 140 congenital tooth defects (77 boys and 63 girls) were collected from normal children in Nanjing. Children with periapical periodontitis of deciduous teeth, including 105 boys and 62 girls, were divided into 7 permanent teeth of left mandible according to Haavikko's method. The age of teeth was calculated, and the age of teeth was matched with natural age by t-test. The mathematical model of the relationship between dental age and natural age of children in Nanjing area was established. The age of teeth was calculated by the formula suitable for local children. The difference of tooth age and age between children with congenital tooth deficiency and normal children was tested by paired t-test, and the difference was tested by Spearman rank correlation test. The age and age difference between children with periapical periodontitis of deciduous teeth and normal controls were tested by paired t-test and repeated according to the extent of inflammatory invasion. Results the average age of teeth in Nanjing area was 0.6 years lower than that of natural age, and that of girls was 1.0 years. The difference was statistically significant (P0.05). Results Haavikko method was used to calculate the average age of teeth in Nanjing area was 0.6 years lower than that of natural age (P0.05). A mathematical model of the relationship between natural age and dental age of children in Nanjing area was established, and the fitting curve equation of natural age and dental age was obtained. The average development of retained teeth in children with congenital tooth deficiency was 0.44 years, the difference was statistically significant (P0.05). The development of retained teeth in a small number of children with congenital absence of teeth was 0.41 years behind, on average, there was a significant difference between the two groups. The development of remaining teeth in most children with congenital loss of teeth was 0.92 years. The correlation coefficient between the number of teeth missing and the natural age of congenital tooth deficiency group was-0.220, which was significantly correlated with that of the congenital tooth deficiency group. There was no significant difference in tooth age between children with periapical periodontitis of deciduous teeth and normal control group, but there was significant difference between the age of inherited permanent tooth germ affected by inflammation and that of normal control group, and the average development degree was 0.59 years behind. The age of the tooth was delayed 0.58 years in the patients with inflammatory invasion of the permanent tooth sac as compared with that in the normal control group. Conclusion A mathematical model of the relationship between dental age and natural age of children in Nanjing was established based on Haavikko method, and there was no statistical difference between the age and natural age. The results can be used to calculate the dental age and natural age of local children. The development of retained teeth in children with congenital tooth deficiency was slower than that in normal children, and there was a significant positive correlation between the number of teeth missing and the degree of remaining tooth growth retardation. Periapical periodontitis of deciduous teeth causes delayed development of inherited permanent tooth germ, with an average delay of 0.59 years.
【学位授予单位】：南京医科大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：R788
【参考文献】
相关期刊论文 前4条
1 王韵;黄山娟;刘鹤;;先天缺牙患儿牙齿发育的影像学研究[J];北京大学学报(医学版);2010年05期
2 贺鸿星;蒋琳;杜波;;口腔门诊1044例初诊儿童就诊意识分析[J];重庆医学;2009年23期
3 庞汝彦;WHO儿童人体测量参照值的制定及应用[J];中华儿童保健杂志;1996年02期
4 嵇国平,曹惠菊,翁思恩,唐国华,袁晓;先天缺牙与牙形态、大小异常相互关系的研究[J];上海口腔医学;2002年01期
，本文编号：2461024
本文链接：https://www.wllwen.com/yixuelunwen/kouq/2461024.html
最近更新
教材专著
