Comparison of the development of the second deciduous molar and first permanent molar in man

1967 ◽  
Vol 12 (11) ◽  
pp. 1245-1260 ◽  
Author(s):  
P.M. Butler
Keyword(s):  
Permanent Molar ◽  
Deciduous Molar

scholarly journals Immunoassay analysis of proteins in gingival crevicular fluid samples from resorbing teeth

2015 ◽  
Vol 86 (2) ◽  
pp. 187-192 ◽  
Author(s):  
Wellington J. Rody ◽  
Manjula Wijegunasinghe ◽  
L. Shannon Holliday ◽  
Kevin P. McHugh ◽  
Shannon M. Wallet
Keyword(s):  
Root Resorption ◽  
Gingival Crevicular Fluid ◽  
Interleukin 1 ◽  
Skewed Distribution ◽  
Mixed Dentition ◽  
Deciduous Teeth ◽  
Permanent Molar ◽  
Dentin Sialoprotein ◽  
Deciduous Molar ◽  
Crevicular Fluid

ABSTRACT Objective:  To carry out an immunoassay analysis of biomarkers expressed in gingival crevicular fluid (GCF) with the main goal of finding a useful diagnostic pattern to distinguish between resorbing deciduous teeth and nonresorbing controls. Materials and Methods:  A split-mouth design was used in this study with a total of 22 GCF samples collected from 11 patients in the mixed dentition. For each child, one deciduous molar with radiographic evidence of root resorption was used as the test tooth whereas the contralateral first permanent molar with formed roots was used as the control tooth. Samples were processed with immunoassays using a panel of selected biomarkers including interleukin-1 beta (IL-1b), interleukin-1 receptor antagonist (IL-1RA), nuclear factor kappa B ligand (RANKL), osteoprotegerin (OPG), matrix metalloproteinase-9 (MMP-9), and dentin sialoprotein (DSP). Results:  There were no statistically significant differences in levels of IL-1b, OPG, and MMP-9 between test and control sites (P > .05). IL-1RA was the only biomarker to show a significant down-regulation (P  =  .04) in GCF samples collected from resorbing teeth. RANKL data showed a heavily skewed distribution and was deemed unreliable. Only one deciduous GCF sample had detectable levels of DSP; therefore, no further statistical calculation was applicable because of the limited amount of data for this biomarker. Conclusions:  This study indicated that IL1-RA is down-regulated in GCF from resorbing primary molars, thus suggesting this cytokine as a potential analyte to be included in a panel that can discriminate between resorbing and nonresorbing teeth.

Allometry, merism, and tooth shape of the lower second deciduous molar and first permanent molar

2015 ◽  
Vol 159 (1) ◽  
pp. 93-105 ◽  
Author(s):  
Shara E. Bailey ◽  
Stefano Benazzi ◽  
Laura Buti ◽  
J.-J. Hublin
Keyword(s):  
Tooth Shape ◽  
Permanent Molar ◽  
Deciduous Molar

scholarly journals Opciones de tratamiento en un paciente con pérdida prematura de segundos molares primarios: zapato distal modificado / Treatment Options in a Patient with Primary Second Molar Premature Loss: Modified Distal Shoe Space Maintainer

2017 ◽  
Vol 35 (75) ◽  
Author(s):  
María Lorena Cardoso ◽  
Diana Emilia Falcón ◽  
Andrea Verónica Galiana
Keyword(s):  
Clinical Case ◽  
Treatment Options ◽  
Oral Rehabilitation ◽  
Second Molar ◽  
Permanent Molar ◽  
Space Maintainer ◽  
Permanent Molars ◽  
Deciduous Molar ◽  
First Permanent Molars ◽  
Distal Shoe

RESUMEN. Antecedentes: La pérdida prematura de un molar primario conlleva a malposición de los dientes contiguos y del sucesor permanente. El efecto depende de las fuerzas que actúan sobre el diente, que están condicionadas a su vez por el estado de erupción del primer molar permanente. Propósito: Describir una opción de tratamiento para la pérdida prematura de segundos molares primarios hasta la erupción de los primeros molares permanentes. Descripción del caso: El caso clínico presentado involucra la rehabilitación oral de un niño de 5 años de edad que presentaba pérdida prematura de los segundos molares primarios. Se decidió colocar un mantenedor de espacio tipo zapato distal modificado. Se realizaron controles trimestrales y, cuando erupcionaron los primeros molares permanentes, aproximadamente a los nueve meses, se les utilizó como pilares para confeccionar el arco lingual. Conclusiones: El tratamiento propuesto mostró resultados satisfactorios en el mantenimiento del espacio hasta la erupción de los primeros molares permanentes.ABSTRACT. Background: The premature loss of a deciduous molar leads to malposition of adjacent teeth and the permanent successor. The effect depends on the forces acting on the tooth, which are conditioned at the same time by the grade of eruption of the first permanent molar. Purpose: To describe a treatment option for primary second molar premature loss until first permanent molars erupt. Case description: This clinical case involves the oral rehabilitation of a 5-year-old boy who lost prematurely his primary second molars. The decision was to place a modified distal shoe space maintainer. Controls were performed every three months and when the first permanent molars erupted, approximately nine months later they were used as pillars, to make the lingual arch. Conclusions: The treatment used showed satisfactory results in maintaining the space until permanent first molars erupted.

Factors Influencing the Development of Molar Occlusion: A Longitudinal Study

1988 ◽  
Vol 15 (2) ◽  
pp. 99-103 ◽  
Author(s):  
B. C. Leighton ◽  
W. H. Feasby
Keyword(s):  
Longitudinal Study ◽  
Second Phase ◽  
Second Molar ◽  
Factors Associated ◽  
Permanent Molar ◽  
Factors Influencing ◽  
Normal Occlusion ◽  
Two Phases ◽  
Deciduous Molar ◽  
Second Period

Longitudinal records, in the form of study casts, of 35 Class I cases were examined for factors associated with changes of sagittal molar relationship during childhood. These were studied at two phases: between the deciduous and mixed dentitions, and between the mixed and permanent dentitions. During the first of these periods, there was a small, but general move to a less post-normal occlusion, although some cases were found to show a slight reverse trend. In the second period, the permanent molar relationship became less post-normal, but this was reflected only weakly in that of the canines. Throughout development, asymmetry of occlusal relation became more marked with age, an unexplained bias towards less post-normal occlusion on the left side developing in the second phase. The amount of change in this period was related to variations of deciduous molar size, especially that of the upper second molar.

scholarly journals Cantilever-Type Traction Appliance for Mandibular First Permanent Molars with Eruption Disturbances

2021 ◽  
Vol 48 (2) ◽  
pp. 229-236
Author(s):  
Heejung Lim ◽  
Eungyung Lee ◽  
Taesung Jeong ◽  
Jonghyun Shin
Keyword(s):  
Case Report ◽  
Early Diagnosis ◽  
Diagnosis And Treatment ◽  
Present Case Report ◽  
Fixed Appliance ◽  
Permanent Molar ◽  
Permanent Molars ◽  
Deciduous Molar ◽  
Short Time ◽  
First Permanent Molars

Eruption disturbances of the mandibular first molars can cause multiple problems in occlusal development although they are extremely rare. Early diagnosis and treatment are very important to prevent complications associated with eruption disturbances. The present case report describes the treatment of two cases of eruption disturbances of the mandibular first permanent molar. A fixed appliance composed of a cantilever spring with mandibular second deciduous molar as an anchor tooth was used to tract the impacted mandibular first permanent molar. The success of both cases shows that this novel traction appliance can be used to induce the eruption of an impacted mandibular first permanent molar within a short time in patients with intact mandibular second deciduous molar as an anchor tooth.

scholarly journals Comparison of the Crown Dimensions between the Maxillary Second Deciduous Molar and the First Permanent Molar

1996 ◽  
Vol 73 (4) ◽  
pp. 179-184 ◽  
Author(s):  
Shintaro KONDO ◽  
Eizo WAKATSUKI ◽  
Huang SHUN-TE ◽  
Chung SHENG-YEN ◽  
Yoshinobu SHIBAZAKI ◽  
...  
Keyword(s):  
Permanent Molar ◽  
Deciduous Molar ◽  
Crown Dimensions
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