scholarly journals ANALYSIS OF MORPHOLOGICAL PARAMETERS OF DENTAL SYSTEM WITH GNATHIC FORM OF MALOCCLUSION CLASS III USING SIMPLYCEPH SOFTWARE (RUSSIA)

2016 ◽  
Vol 1 (2) ◽  
pp. 14-19
Author(s):  
GV V Kuznetsova ◽  
LS S Persin ◽  
DA A Kuznetsov ◽  
LG G Markaryan ◽  
MA A Batler ◽  
...  
Keyword(s):  
Detailed Examination ◽  
Scientific Data ◽  
Differential Diagnostics ◽  
Class Iii ◽  
Facial Skeleton ◽  
Stomatognathic System ◽  
Permanent Molar ◽  
Condyloid Process ◽  
Growth Zones ◽  
Permanent Molars

Mesiocclusion associated with asymmetric mandibular development is a gnathic form of mesiocclusion characterized by asymmetric deformation of the facial skeleton, requiring detailed examination to perform differential diagnostics. We need to analyze lateral teleroentgenogram of the head using «SimplyCeph» software, frontal teleroentgenogram of the head, multidetector computed tomography. According to scientific data, asymmetric mandibular development is much rarer in clinical practice. Etiology of this abnormality is not determined to date. It is believed that growth zones are activated in condyloid process and mandibular angle for unknown reasons. Aim - to determine the morphological condition of stomatognathic system on the stages of rehabilitation after complex treatment of patients with asymmetric growth of mandible. Materials and methods. We examined 40 patients with malocclusion class III aged from 16 to 40. The examined group included patients with malocclusion class III that corresponded to the certain degree of severity of the abnormality: Grade I - joining of the first permanent molars and canines for Class II Angle, displacement value does not exceed 1/2 of the first permanent molar cusp. Sagittal overjet is absent; the value of anterior crossbite is minimal, moderate or deep. Results. During the stages of rehabilitation of patients with malocclusion class III and asymmetry of the mandible it is necessary to conduct a comprehensive study of facial and gnathic areas of dental system, analyze the results of radiodiagnosis of sagittal, transversal and vertical skull parameters. Conclusion. Method of subcondylar vertical osteotomy helps to normalize the morphological state of dental system. Keywords: malocclusion class III, computer program «SimplyCeph», analysis of lateral teleroentgenogram.

Detection of early occlusal caries of the first permanent molar using different techniques (An in vivo study)

2019 ◽  
Vol 31 (1) ◽  
pp. 1-8
Author(s):  
Samah F. Al-Qazzaz ◽  
Abeer M. Hassan
Keyword(s):  
Sensitivity And Specificity ◽  
Visual Inspection ◽  
Caries Detection ◽  
Occlusal Caries ◽  
Clinical Sensitivity ◽  
Permanent Molar ◽  
Permanent Molars ◽  
Early Caries ◽  
First Permanent Molars ◽  
Better Than

Background: Molars and premolars are considered as the most vulnerable teeth of caries attack, which is related to the morphology of their occlusal surfaces along with the difficulty of plaque removal. different methods were used for early caries detection that provide sensitive, accurate preoperative diagnosis of caries depths to establish adequate preventive measures and avoid premature tooth treatment by restoration. The aim of the present study was to evaluate the clinical sensitivity and specificity rates of DIAGNOdent and visual inspection as opposed to the ICDAS for the detection of initial occlusal caries in noncavitated first permanent molars. Materials and Methods: This study examined 139 occlusal surface of the first permanent molar pooled from fifty patients aged 8-9 years by three methods. The selected criteria include one occlusal site per tooth (first permanent molars) with carious lesions range from 0 to 3 according to ICDASII (gold standard) visual criteria then the clinical sensitivity and specificity of visual inspection according to Ekstrand et al.in 1997 and DIAGNOdent were performed. . Results: the highest correlation was found between the ICDASII and DIAGNOdent. The sensitivity of the DIAGNOdent for the enamel caries detection (D1) was better than that of visual inspection. The sensitivity and the specificity for the DIAGNOdent at D3 threshold were better than the D1 threshold and the visual inspection method. Conclusion: DIAGNOden pen can be used as a tool for early caries detection in cases of difficult diagnosis that provide good additional sensitivity to the visual inspection.

scholarly journals Current Trends in Orthognathic Surgery in Poland—A Retrospective Analysis of 124 Cases

2021 ◽  
Vol 11 (14) ◽  
pp. 6439
Author(s):  
Ewa Zawiślak ◽  
Szymon Przywitowski ◽  
Anna Olejnik ◽  
Hanna Gerber ◽  
Paweł Golusiński ◽  
...  
Keyword(s):  
Orthognathic Surgery ◽  
Corrective Osteotomy ◽  
University Hospital ◽  
Class Iii ◽  
Facial Skeleton ◽  
Skeletal Class ◽  
Skeletal Malocclusion ◽  
Current Trends ◽  
Maxillary Osteotomy ◽  
Skeletal Class Ii

The analysis aims at assessing the current trends in orthognathic surgery. The retrospective study covered a group of 124 patients with skeletal malocclusion treated by one team of maxillofacial surgeons at the University Hospital in Zielona Góra, Poland. Various variables were analysed, including demographic characteristics of the group, type of deformity, type of osteotomy used, order in which osteotomy was performed and duration of types of surgery. The mean age of the patients was 28 (ranging from 17 to 48, SD = 7). The group included a slightly bigger number of females (59.7%), with the dominant skeletal Class III (64.5%), and asymmetries were found in 21.8% of cases. Types of osteotomy performed during surgeries were divided as follows: LeFort I, segmental LeFort I, BSSO, BSSO with genioplasty, LeFort I with BSSO, LeFort I with BSSO and genioplasty, segmental LeFort I with BSSO, isolated genioplasty. Bimaxillary surgeries with and without genioplasty constituted the largest group of orthognathic surgeries (49.1%), and a slightly smaller percentage were one jaw surgeries (46.7%). A statistically significant correlation was found between the type of surgery and the skeletal class. In patients with skeletal Class III, bimaxillary surgeries were performed significantly more often than in patients with skeletal Class II (57.5% vs. 20.0%; p = 0.0002). The most common type of osteotomy in all surgeries was bilateral osteotomy of the mandible modo Obwegeser–Epker in combination with Le Fort I maxillary osteotomy (42.7%). The order of osteotomies in bimaxillary surgeries was mandible first in 61.3% of cases. The longest surgery was bimaxillary osteotomy with genioplasty (mean = 265 min), and the shortest surgery was isolated genioplasty (mean = 96 min). The results of the analysis show a significant differentiation between the needs of orthognathic surgery and the types of corrective osteotomy applied to the facial skeleton.

scholarly journals Dental Sealant Composition-Retention Assessment in Young Permanent Molars

Materials ◽  
2021 ◽  
Vol 14 (7) ◽  
pp. 1646
Author(s):  
Alexandrina Muntean ◽  
Codruta Sarosi ◽  
Sorina Sava ◽  
Marioara Moldovan ◽  
Andrei Ilie Condurache ◽  
...  
Keyword(s):  
Preventive Measures ◽  
Public Health Problem ◽  
Tooth Decay ◽  
Permanent Molar ◽  
Maxillary Molars ◽  
Dental Sealants ◽  
Dental Sealant ◽  
Permanent Molars ◽  
First Time ◽  
First Permanent Molars

Tooth decay in children and adolescents remains a public health problem, despite prophylaxis and preventive measures being largely available. The aim of our study was to evaluate the clinical behavior of four dental sealants, related to first permanent molar topography and patient age (when sealant was applied for the first time). We assessed, by means of visual inspection and palpation with a dental probe, a group of 200 children, enrolled corresponding to school age-grade (mean age of 7 years at baseline) and randomly divided according to the material used as dental sealant (Admira seal©, Embrace Wet Bond©, Fotoseal©, GC Fuji Triaje©) in 4 groups (n = 50). Sealant clinical evaluation was made at 6-, 12-, 18-month intervals for dental material retention assessment. At 6 months, the sealant detached the most from 3.6 molars, and the material used was Fotoseal© (27.6%). At 12 months, Fotoseal© (48.3%) and GC Fuji Triaje© (41.4%) from 3.6 molars express detachment. At 18 months, 4.6. molars sealed with Admira Seal© (25.7%) and Embrace Wet Bond© (28.6%) lost the sealant. We noticed less detachment in maxillary molars and if sealant was applied around 7 years of age. In conclusion, sealant application on first permanent molars must be encouraged and practitioners can choose between various materials available.

scholarly journals Influence of premature loss of the first permanent molar on the dental arches morphology – radiological evaluation

2017 ◽  
Vol 63 (4) ◽  
pp. 180-183
Author(s):  
Andreea Pop ◽  
◽  
Radu Septimiu Câmpian ◽  
Mariana Păcurar ◽  
Ecaterina Ionescu ◽  
...  
Keyword(s):  
Morphological Changes ◽  
Vertical Plane ◽  
Radiological Evaluation ◽  
Panoramic Radiographs ◽  
Permanent Molar ◽  
Permanent Molars ◽  
First Permanent Molars ◽  
Over Time

Objectives. The purpose of this research was to radiological identify the morphological changes of the dental arcades resulting from the premature loss of the permanent first molars. Material and method. The study was conducted between 2014-2016 on a group of 50 patients aged 12-15 years who presented themselves with the imminence of premature loss of the first permanent molars. 1: 1 panoramic radiographs were performed before the extractions and at 6 and 12 months after the extractions respectively. Results and discussions. The changes in position of the antagonist teeth and those of the second permanent molars, in the two dental arches, both in the sagittal and in the vertical plane were revealed. Conclusions. The premature loss of the first permanent molars, especially after the eruption of the second permanent molars, causes unwanted dental movements and severe dental-maxillary abnormalities over time.

scholarly journals Cone-beam computed tomography analysis on root and canal morphology of mandibular first permanent molar among multiracial population in East Coast Malaysian population

2018 ◽  
Vol 12 (03) ◽  
pp. 410-416 ◽  
Author(s):  
Prunella Ubung Deng ◽  
Mohamad Syahrizal Halim ◽  
Sam'an Malik Masudi ◽  
Saaid Al-Shehadat ◽  
Basaruddin Ahmad
Keyword(s):  
Computed Tomography ◽  
Cone Beam Computed Tomography ◽  
East Coast ◽  
Cone Beam ◽  
Root Canals ◽  
Single Root ◽  
Malaysian Population ◽  
Permanent Molar ◽  
Permanent Molars ◽  
The Right

ABSTRACT Objective: The aim of this study is to investigate the variations in the number of root and canal in the mandibular first permanent molars (MFPMs) teeth in East Coast Malaysian population using cone-beam computed tomography (CBCT). Materials and Methods: CBCT images which show MFPMs recorded in HUSM Dental Clinic between January 2015 and June 2016 was obtained and analyzed for their number of roots and canals. A total of 208 CBCT images of MFPMs were collected; 118 patients had unilateral molars and 90 patients had bilateral molars. The following observations were made: (1) root number; (2) number of canals per root; and (3) comparisons of number of roots and canals according to gender, ethnicity, and position. Results: The majority of cases of bilateral MFPM had the same number of roots (95.6%, 95% confidence interval [CI]: 89.01%, 98.78%) on both the right and left side and only 4 cases (4.4%, 95% CI: 1.22%, 10.99%) had 3 roots on the right and 2 roots on the left sides. The majority of cases had the same number of canals on both sides (66.7%, 95% CI: 55.95, 76.26%) and 33.3% (95% CI: 23.74%, 44.05%) with unequal number of canals. The occurrence of the number of canals was not independent of the sides of the arch (P < 0.001) and there was statistically significantly greater proportion of cases who had greater number of canals on the right side than the left (P = 0.03). The prevalence of right single-rooted MFPM was very small at 0.3% (n = 1) in a Malay male (95% CI: 0.00, 1.83) and the most prevalent was two roots first molar (88.4%). The number of roots was not associated with sex or ethnic group (P > 0.05). The MFPM with a single root was found to have only one mesial canal. For two rooted MFPM, the most prevalent occurrence was two canals at the mesial and one canal at the distal roots (59%); followed by single canals in each mesial and distal (21%) and double canals per root (18%). Three roots MFPM have either single or double canals in the mesial root and double canals in the distal root. Conclusions: The majority of population in the East Coast region of Malaysia has two roots and three root canals in their MFPMs. There was no difference in the number of roots between gender and ethnic and canals between ethnic.

Achieving correction of a posterior scissorbite with a mini-screw

2020 ◽  
Vol 13 (1) ◽  
pp. 17-18
Author(s):  
Jason Matharu ◽  
Lucy Macey-Dare ◽  
James Dickson ◽  
Jerry Farrier
Keyword(s):  
Case Report ◽  
Clinical Relevance ◽  
Minimal System ◽  
Posterior Teeth ◽  
Permanent Molar ◽  
Adolescent Patients ◽  
Molar Teeth ◽  
Permanent Molars ◽  
Fixed Appliances

Scissorbite correction of posterior teeth can often be challenging. For adolescent patients, they may occur due to late eruption of the second permanent molar teeth after appliances are removed, or due to operator preference not to include them on the appliance. This case report describes a 17-year-old patient who had previously been treated with fixed appliances but did not originally have second permanent molars bonded. Complete correction of the scissorbite on the UR7 was effectively achieved in 14 weeks using a minimal system comprising only a palatal mini-screw, molar band and elastomeric chain. CPD/Clinical Relevance: Mini-screws placed in a palatal position can provide an effective way to correct posterior scissorbites.

scholarly journals Relation between Angle Class II malocclusion and deleterious oral habits

2012 ◽  
Vol 17 (6) ◽  
pp. 111-117
Author(s):  
José Tarcísio Lima Ferreira ◽  
Maria do Rosário Ferreira Lima ◽  
Luciana Zappeloni Pizzolato
Keyword(s):  
Class Ii ◽  
Class Ii Malocclusion ◽  
Class Iii ◽  
Chi Square ◽  
Significance Level ◽  
Oral Habits ◽  
Angle Class Ii ◽  
Stomatognathic System ◽  
Chi Square Test ◽  
History Of

INTRODUCTION: Oral habits may interfere on the growth and development of the stomatognathic system and orofacial myofunctional conditions, producing changes in the position of teeth in their dental arches. OBJECTIVE: The purpose of this study was to verify the presence of deleterious oral habits in individuals with malocclusion and see if there is a predominance of Class II malocclusion in these individuals. METHODS: The records of 140 patients treated at the Clinic of Preventive Orthodontics FORP-USP who had already completed treatment were randomly selected and analyzed. Their ages ranged from 6 to 10 years and 11 months. Associations were made between the presence or absence of deleterious oral habits, type and number of habits found in each individual and the type of malocclusion according to Angle classification. The statistical analysis used was the Chi-square test with a significance level of 5%. History of deleterious oral habits was found in 67.1% of individuals. RESULTS: The Class I malocclusion was most frequent (82.9%), followed by Class II malocclusion (12.1%) and Class III (5%). CONCLUSION: There was a predominance of Class II malocclusion in individuals with a history of deleterious oral habits.

scholarly journals Orthodontic Replacement of Lost Permanent Molar with Neighbor Molar: A Six-Year Follow-Up

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Taisa Boamorte Raveli ◽  
Ricardo Lima Shintcovsk ◽  
Luegya Amorim Henriques Knop ◽  
Luana Paz Sampaio ◽  
Dirceu Barnabé Raveli
Keyword(s):  
Female Patient ◽  
Adult Female ◽  
Treatment Time ◽  
Facial Aesthetics ◽  
Permanent Molar ◽  
Space Closure ◽  
Permanent Molars ◽  
Sliding Mechanics ◽  
Adult Female Patient

Extraction is very frequent indication in orthodontic planning, especially when there are crowding, biprotrusion, and aesthetically unpleasant profiles. Next to extraction comes space closure, which represents a challenge for orthodontists because of extended treatment time, discomfort created for the patient, tissue tolerance, and stability concerns. When it comes to what mechanics to choose for space closure, loops present two major advantages in relation to sliding mechanics: absence of abrasion and possibility to reach pure dental translation. A case is presented where an adult female patient with early loss of the first lower permanent molars, minor lower crowding, and tooth biprotrusion was treated with upper first bicuspids extraction along with upper and lower space closure done with T-loops to promote best space closure control in order to correct the malocclusion and enhance facial aesthetics.

scholarly journals Making Space for Permanent Molars in Growing Baboon (Papio anubis) and Great Ape (Pan paniscus and P. troglodytes) Mandibles: Possible Ontogenetic Strategies and Solutions

2011 ◽  
Vol 2011 ◽  
pp. 1-16 ◽  
Author(s):  
Julia C. Boughner
Keyword(s):  
Growth Rates ◽  
Pan Paniscus ◽  
Measurement Data ◽  
Linear Measurement ◽  
Postnatal Growth ◽  
Papio Anubis ◽  
Geometric Morphometric ◽  
Permanent Molar ◽  
Permanent Molars ◽  
Molar Morphology

While mandible proportions do not appear to constrain permanent molar initiation times, how adequate space is created in the corpus for these teeth in a timely way is not well understood. This question is important for explaining how primate tooth and jaw development and evolution are coordinated. Landmark and linear measurement data were used to characterize mandible shape, growth trajectory, and growth rate between two genera, Papio and Pan, with contrasting permanent molar initiation schedules and mandible proportions. 3D geometric morphometric and 2D bivariate analyses showed genus-level differences in mandible morphology from birth that were amplified by different postnatal growth trajectories. Different corpus proportions and regional variation in corpus growth rates helped create space in a timely way for the molars. Regional corpus growth rates may evolve alongside permanent molar morphology and developmental timing to modify space available in the corpus for these teeth.

scholarly journals Sealant Effectiveness for Children Receiving a Combination of Preventive Methods in a Fluoridated Community: Two-Year Results

1977 ◽  
Vol 56 (12) ◽  
pp. 1511-1519 ◽  
Author(s):  
Robert A. Bagramian ◽  
Richard C. Graves ◽  
Sujan Srivastava
Keyword(s):  
First Graders ◽  
Dental Health ◽  
Sixth Graders ◽  
Occlusal Caries ◽  
Permanent Molar ◽  
Occlusal Surfaces ◽  
Molar Teeth ◽  
Permanent Molars ◽  
Preventive Methods ◽  
Sealant Retention

A series of preventive methods in combination have been used to reduce dental caries in children including dental health education, prophylaxes, pit and fissure sealants, topical application of fluoride and restorative care. Prophylaxes, sealant, and fluoride procedures are repeated every six months. Two-year results show reductions of occlusal caries increments of 74.3% for first graders and 77.1% for sixth graders. Sealant loss, as defined in this study, varied from 33% to 90% with the highest loss occurring in the newly erupted permanent molars during the first six months of the project. These high sealant loss rates are thought to be related to the age of the population which was designed to include children at the ages of peak eruption of permanent molar teeth (ages six and twelve). These teeth were often only minimally erupted and maintaining the dry field required for sealant retention was extremely difficult. However, in spite of these high rates of sealant loss, caries reduction on occlusal surfaces was highly significant in comparison to that of children who did not receive sealants.

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