scholarly journals MORPHOMETRIC PATTERNS OF MAXILLAR Y APICAL BASE VARIABILITY IN PEOPLE WITH VARIOUS DENTAL ARCHES AT PHYSIOLOGICAL OCCLUSION

2021 ◽  
Vol 11 (4) ◽  
pp. 123-129
Author(s):  
Taisiya Kochkonyan ◽  
Ghamdan Al-Harazi ◽  
Dmitry Domenyuk ◽  
Sergey Dmitrienko ◽  
Stanislav Domenyuk
Keyword(s):  
Frontal Plane ◽  
Research Literature ◽  
Morphometric Study ◽  
Dental Arch ◽  
Complex Structures ◽  
Plaster Models ◽  
Apical Base ◽  
Base Width ◽  
Apical Area ◽  
Craniofacial Complex

Morphometric data on the structure of the craniofacial complex are reliable and diagnostically significant values that are of applied nature in terms of practical dentistry. Within this study, analysis of conebeam computed tomograms, biometric indicators of plaster models obtained from the jaws of 83 people (aged 21–35) with physiological occlusion and various types of dental, gnathic dental arches, the degree of proportion between the maxillary apical base and the inter-canine distance were identified. Depending on the dental arch type, the patients were divided into three groups. The morphometric study in the CBCT frontal plane was the distance between the canines tearing tubercles and the inter-canine distance in the apical area. The study outcomes revealed discrepancies between the calculated and actual indicators of the apical base width for all types of dental arches in people with physiological occlusion. In case of mesotrusive dental arches (incisional angle — 127–143°), the width of the apical base corresponded to the width of the dental arches between the canines, while the differences in indicators were not statistically significant. In people with retrusive dental arches (incisional angle exceeding 144°), the width of the dental arch was found to be significantly above the width of the apical bases. As far as protrusive dental arches are concerned (incisional angle below 126°), these patients featured predominance of the apical bases width over the inter-canine distance. The obtained data add to that already available in research literature regarding the relationships and dimensional features pertaining to the craniofacial complex structures, as well as have applied value in orthodontic clinical practice

scholarly journals Howes’ Analysis Measurement of Rumah Sakit Gigi dan Mulut Maranatha Bandung Patients

2017 ◽  
Vol 1 (6) ◽  
Author(s):  
Evelyn Eunike
Keyword(s):  
Orthodontic Treatment ◽  
Treatment Plan ◽  
Dental Arch ◽  
Inclusion Criteria ◽  
Measured Variable ◽  
Analysis Measurement ◽  
Caucasian Race ◽  
Significant Difference ◽  
Apical Base ◽  
Base Width

Howes’ Analysis is an important tool in orthodontic treatment,as it can analyze abnormalities of teeth and jaw, to help diagnose and plan dental care. The aim of this study was to compare the length and width of the dental arch and the the apical base patients of Maranatha Dental and Mouth Hospital (Rumah Sakit Gigi dan Mulut Maranatha) / RSGM and Howes Analysis standard of Caucasian Race which considered to be the reference in determining of orthodontic treatment plan. The subjects consisted of 30 patients who met the inclusion criteria and the results data were analyzed by unpaired t test. The measured variable is the length of the dental arch, the width of the dental arch, and the width of the apical base, and calculated into Howes’ Index. The results showed that there were significant differences in the measurement of the length and width of the dental arch and the Howes Index; whereas the measurement of the apical base there was no significant difference between the results of the study and the reference of Caucasian Race. Conclusion, the length and width of the dental arch and the Howes’ Index did not differ between RSGM Bandung patients with Caucasian race standards whereas the apical base width was different.Keywords: Caucasian people, Howes’ analysis, Howes’ index, Maranatha Dental and Mouth Hospital Bandung

scholarly journals Is there a relationship between dental crowding and the size of the maxillary or mandibular apical base?

2019 ◽  
Vol 90 (2) ◽  
pp. 216-223 ◽  
Author(s):  
Aaron M. Crossley ◽  
Phillip M. Campbell ◽  
Larry P. Tadlock ◽  
Emet Schneiderman ◽  
Peter H. Buschang
Keyword(s):  
Class I ◽  
Cone Beam ◽  
Dental Arch ◽  
Tooth Size ◽  
Cross Sectional ◽  
Base Size ◽  
Total Cross Sectional Area ◽  
Maxilla And Mandible ◽  
Dental Crowding ◽  
Apical Base

ABSTRACT Objective: To determine whether apical base size is related to dental crowding. Materials and Methods: Digital scans of dental casts were taken of 75 untreated Class I adults to measure maxillary and mandibular tooth size, dental arch perimeters, intermolar widths, and intercanine widths. Cone beam computed tomography (CBCT) images were used to measure the apical base of the maxilla and mandible, including the total cross-sectional area, five basal arch perimeters and five basal arch widths. Principal components factor analyses were performed to evaluate the relationships between the apical base size and tooth-size-arch-length discrepancies (TSALD). Results: The dental arch and maxillary apical base measures were significantly larger in males than females. There were only limited sex differences in mandibular apical base size. The dental arch measurements were smaller in subjects with greater upper and lower TSALD. Maxillary and mandibular apical base dimensions were positively interrelated. Low-to-moderate correlations were found between the size of the maxillary apical base and TSALD. The size of the mandibular apical base was not related to upper or lower TSALD. Tooth size showed little to no relationship with TSALD. Conclusions: Although maxillary apical base size is related to maxillary and mandibular crowding in subjects with Class I malocclusion, mandibular apical base size is not.

Expansion of the Mandibular Arch in Children during the Mixed Dentition Period - A Clinical Study

2006 ◽  
Vol 30 (4) ◽  
pp. 329-332 ◽  
Author(s):  
Kenshi Maki ◽  
Yasuhiro Sorada ◽  
Toshihiro Ansai ◽  
Takahiro Nishioka ◽  
Raymond Braham ◽  
...  
Keyword(s):  
Mixed Dentition ◽  
Dental Arch ◽  
Type I ◽  
Type Ii ◽  
Tooth Replacement ◽  
Lateral Expansion ◽  
Incisor Tooth ◽  
Mandibular Arch ◽  
The Individual ◽  
Apical Base

A review of the dental literature revealed relatively few studies on the expansion of the mandibular dental arch. The present study attempted expansion of the mandibular arch using a Bihelix appliance. The subjects were 16 children, exhibiting crowding, age ranges from 7 to 11 years. The mandible was expanded 2.0 mm every 3 months. Significant expansion, not only of the individual tooth inter-arch dimensions but also of the overall arch length, was obtained during the period of incisor tooth replacement. The mode of expansion was classified as follows: Type I, those, which showed no effect on the apical base; Type II, those which showed no consistency of the measurement lines. In this study, 6 of16 cases were classified as type I and 10 cases as type II. Expansion was continued over a period of 1.5 to 3 years. We concluded that considerable lateral expansion of the mandibular arch is possible using the Bihelix appliance. It is suggested that this might contribute greatly to non-extraction orthodontic treatment. Further studies are recommended.

scholarly journals Is It Possible to use Cross-sectional and Vertical Facial Measurements to establish the Shape of the Mandibular Arch?

2014 ◽  
Vol 15 (6) ◽  
pp. 735-739
Author(s):  
Adilson Luiz Ramos ◽  
Ossam Abu El Haje ◽  
Daniela Daufenback Pompeo ◽  
Gisela Crippa Furtado ◽  
Luciana Monti Lima Rivera
Keyword(s):  
Previous History ◽  
Dental Arch ◽  
Cross Sectional ◽  
Method Error ◽  
Significance Level ◽  
Mandibular Arch ◽  
The Face ◽  
History Of ◽  
Examiner Agreement ◽  
Plaster Models

ABSTRACT Background Given the benefits of radiographic cephalometric studies in determining patterns of dental-skeletal-facial normality in orthodontics, the aim of this study was to investigate the association between mandibular dental arch shape and cross-sectional and vertical facial measurements. Materials and methods It was analyzed plaster casts and teleradiographs in frontal and lateral norm belonging to 50 individuals, aged between 15 and 19 years, with no previous history of orthodontic treatment and falling into four of the six Andrews's occlusion keys. The plaster models were scanned (3D) and the images of the dental arches were classified subjectively as oval, triangular and quadrangular by three calibrated examiners, with moderate inter-examiner agreement (Kappa = 0.50). After evaluation of the method error by paired t test (p > 0.05), it was carried out the analysis of cross-sectional and vertical facial measurements to be compared to the shape of the dental arch. Data were subjected to one-way analysis of variance with a significance level of 5%. Results When the VERT index was compared with the three arch shapes, no measurement showed statistically significant differences (p > 0.05): triangular (0.54); oval (0.43); and quadrangular (0.73); as well as there were no differences (p > 0.05) in the widths of the face (141.20; 141.26; 143.27); maxilla (77.27; 77.57; 78.59) and mandible (105.13; 103.96; 104.28). Conclusion It can be concluded that there was no correlation between different shapes of the mandibular dental arch and the cross-sectional and vertical facial measurements investigated. How to cite this article El Haje OA, Pompeo DD, Furtado GC, Rivera LML, Paranhos LR. Is It Possible to use Cross-sectional and Vertical Facial Measurements to establish the Shape of the Mandibular Arch? J Contemp Dent Pract 2014;15(6):735-739.

Treatment Outcome after One-Stage Repair in Children with Complete Unilateral Cleft Lip and Palate Assessed with the Goslon Yardstick

2009 ◽  
Vol 46 (4) ◽  
pp. 374-380 ◽  
Author(s):  
Piotr Fudalej ◽  
Maria Hortis-Dzierzbicka ◽  
Barbara Obloj ◽  
Dorota Miller-Drabikowska ◽  
Zofia Dudkiewicz ◽  
...  
Keyword(s):  
Cleft Lip ◽  
Cleft Lip And Palate ◽  
Pearson Correlation ◽  
Interrater Agreement ◽  
Dental Arch ◽  
First Year ◽  
Kappa Statistics ◽  
One Stage ◽  
First Year Of Life ◽  
Plaster Models

Objective: To compare results of Golson Yardstick measurement of dental arch relationships in a sample of 10-year-old Polish children with results of the Golson measurement in published reports. Materials and Methods: Plaster models of 28 consecutively treated subjects with unilateral cleft lip and palate (UCLP) that was repaired with a one-stage simultaneous closure performed in the first year of life. All individuals were born between 1994 and 1995. The Goslon score (categories 1 to 5) was allocated. Intra- and interrater agreement was assessed with kappa statistics and Pearson correlation coefficient. Independent t tests were employed to detect difference between the score in the present and other published samples. Results: Mean Goslon score equaled 2.44; 57% of the patients were allocated Goslon category 1 or 2, 32% were rated Goslon 3, and 11% of the patients were assigned category 4 or 5. Intrarater agreement was between 0.75 and 0.77. Interrater agreement was 0.79. Conclusions: Dental arch relationship following one-stage repair was comparable with the results of the centers with the best outcome.

scholarly journals Dental Arch Widths and Mandibular-Maxillary Base Width in Class III Malocclusions with Low, Average and High MP-SN Angles

2007 ◽  
Vol 77 (1) ◽  
pp. 36-41 ◽  
Author(s):  
Fengshan Chen ◽  
Kazuto Terada ◽  
Liping Wu ◽  
Isao Saito
Keyword(s):  
Skeletal Growth ◽  
The Other ◽  
Dental Arch ◽  
Class Iii ◽  
High Angle ◽  
Other Hand ◽  
Mandibular Plane ◽  
Mandibular Molar ◽  
The Difference ◽  
Base Width

Abstract Objective: To analyze the development of the dental arches and skeletal mandibular-maxillary bases in untreated Class III malocclusions with low averages and high mandibular plane angles in subjects aged 10 to 14. Materials and Methods: The records of 50 untreated Japanese girls with Class III malocclusions at age 10 were selected from the files of patients pending orthodontic surgery. The patients included those with low (≤27°), average (27° through 37°) and high (>37°) mandibular plane angles. The maxillary skeletal base width, biantegonial width, and maxillary and mandibular intermolar width were determined on posteroanterior cephalograms obtained at annual intervals when subjects were between 10 and 14 years of age. The difference between the maxillary and mandibular intermolar width was also calculated and reported. Results: All skeletal and dental transverse widths in the high-angle group were significantly smaller than those in the low-angle group (P < .05) from ages 10 to 14. On the other hand, the maxillary to mandibular molar difference was the same for the three groups (P > .05) at each age. The deviations in molar differences did increase from age 10 to age 14 in all three groups. Conclusion: Mandibular plane angles might play a stronger role in the transverse skeletal growth of the maxilla and the mandible than the transverse dental growth of the maxilla and the mandible.

scholarly journals Estimation of Distances in 3D by Orthodontists Using Digital Models

2021 ◽  
Vol 11 (18) ◽  
pp. 8285
Author(s):  
Masrour Makaremi ◽  
Bernard N’Kaoua
Keyword(s):  
Decision Making ◽  
Numerical Models ◽  
Distance Estimation ◽  
Reference Value ◽  
3D Models ◽  
Dental Arch ◽  
Digital Models ◽  
Arch Models ◽  
Therapeutic Decision Making ◽  
Plaster Models

In the field of orthodontics, digital dental arch models are increasingly replacing plaster models in orthodontic diagnostics. This change in interface from physical plaster models to digital image-based models raises the question of how orthodontists interpret intra- and inter-arch relationships from an image on a screen. In particular, the issue of the accuracy of the distances estimated on numerical models is crucial since the estimation of distances is the basis of the therapeutic decision-making process. Studies have shown that distances were well estimated on plaster models, but no study has verified this point on numerical models. This is the question that our study addresses. The experimental protocol consisted of collecting estimates of measurements made by orthodontists using digital models. The reliability of these measurements was then assessed by comparing them to the actual physical distances. We asked 31 orthodontists (19 women and 12 men; an average age of 37 years) to generate 3D model-based measurements of seven different elements: mandibular congestion, the maxillary intermolar distance, Spee’s curve, 16/26 symmetry, the right canine class, overbite, and overjet. These values were then compared to the actual measurements calculated using Insignia® software (ORMCO Corporation: Brea, CA, USA), using single sample t-tests. This test makes it possible to compare a distance estimated by the participants with a reference value, which corresponds here to the real distance. The results indicate that, overall, the distance estimates made on the 3D models differ significantly from the actual distances measured using the Insignia® software. This was particularly so for mandibular crowding (test value = 0; t (30) = 10.74; p ≤ 0.01), test value = 1; t (30) = 6.23; p ≤ 0.01). Although no study has focused on distance estimation on numerical models in the field of orthodontics, our results agree with the conclusions of studies showing that distances are not estimated in the same way in real environments and virtual environments. Additional studies will make it possible to identify more clearly the parameters (individual factors, equipment, etc.), which make it possible to improve the estimation of distances in the practice of orthodontics. In any case, these studies are necessary to improve the training of future practitioners in the use of virtual models for decision-making and to support them in the digital transition.

STUDY OF THE INFLUENCE DEGREE OF THE ARCHITECTONICS OF THE PALATINE ARCH OF REMOVABLE DENTURES ON THE PHONETIC AND ACOUSTIC PROPERTIES OF THE PROSTHETIC CARRIERS’ SPEECH

2021 ◽  
pp. 101-108
Author(s):  
Guskov A.V. ◽  
Kalinovskiy S.I. ◽  
Kozhevnikova M.S. ◽  
Rodina T.S. ◽  
Ponomareva N.A.
Keyword(s):  
Original Method ◽  
Ease Of Use ◽  
Acoustic Properties ◽  
Morphometric Study ◽  
Orthopedic Treatment ◽  
Dental Implantation ◽  
Artificial Teeth ◽  
Influence Degree ◽  
Plaster Models ◽  
Surgical Operations

According to WHO, about half of the inhabitants of the Russian regions by the age of 65 are faced with the problem of complete loss of teeth. Removable prosthetics is the most affordable solution to the problem, even despite the constant development of technologies for fixed prosthetics and dental implantation. In addition, this is the only way out for patients who have certain contraindications for surgical operations, namely, dental implantation of teeth. Improvement of techniques and approaches to the reconstruction of the optimal design of dentures allows not only to optimize the design of the denture, but also to increase the ease of use and the speed of adaptation to them. Thus, the aim of the study is to determine the degree of influence of the architectonics of the palatine arch of modern removable dentures on the phonetic and acoustic properties of the prosthetic carriers’ speech. The stydy methodology consists in a morphometric study of 96 plaster models with various defects in the dentition of the upper jaws of patients, divided into groups, carrying out orthopedic treatment using the developed original method of obtaining functional impressions, and in the phonetic analysis of audiograms with a typical set of phonemes necessary for studying phonemes at different periods of adaptation for complete removable dentures. The results obtained made it possible to find out that not only the position of the facets of artificial teeth, but also the state of the palatine vault, the creation of the necessary volume for the location of the tongue and the formation of conditions for its location in the oral cavity at rest, has a significant effect on the phonetics of prosthetic carriers. The results of the phonetic analysis show a significantly faster degree of adaptation of patients with included defects of teeth and dentition, as well as a significantly higher rate of adaptation of patients whose prostheses were made using the original method in all studied groups.

Morphometric analysis of relationships of basic dimensions of dental arts taking into account individual gnatic types

2019 ◽  
Vol 1 (5) ◽  
pp. 37-44 ◽  
Author(s):  
S. V. Dmitrienko ◽  
B. N. Davydov ◽  
D. A. Domenyuk ◽  
S. O. Ivanyuta
Keyword(s):  
Permanent Teeth ◽  
Dental Arch ◽  
Aesthetic Result ◽  
Lower Jaw ◽  
Biometric Measurements ◽  
Upper Jaw ◽  
Artificial Teeth ◽  
The Relationship ◽  
Plaster Models ◽  
Lower Arch

Aim. Determining the relationship between the main parameters of the dental arches of the upper and lower jaw in people with physiological occlusion of permanent teeth. Materials and methods. The research materials were the results of biometric measurements of plaster models of dentition of 119 people of the first period of adulthood with a full set of permanent teeth, physiological occlusion, and various gnathic and dental types of dental arches. The gnathic variants (mesognathy, dolichognathy, brachygnathy) of the dental arches were determined taking into account the dental index calculated as the ratio of the half of the sum of the 14-tooth crowns to the width of the dental arch between the second molars. Types of the dental system (normodontia, macrodontia, microdontia) were determined by the results of the summation of the width of the crowns of the upper teeth. Results. According to the results of biometric studies, it was established that regardless of the gnathic and dental type of dental arches, the ratio of the sum of the mesial-distal sizes of 14 teeth of the upper jaw to the same parameters of the lower jaw averaged 1.065 ± 0.005. The ratio of the sum of the width of the crowns of 7 teeth of each half of the dental arch to the size of the frontal-distal diagonal was 1.065 ± 0.005 both on the upper and on the lower dental arch. The ratio of the diagonal dimensions of the upper dental arch to the same size of the lower arch was also 1.065 ± 0.01 for all types of dental arches. Conclusion. The obtained ratios, as highly informative, diagnostically significant indicators, can be used to determine the compliance of the main dimensions of the dental arches of the upper and lower jaws, to characterize the physiological occlusion, to select the size of artificial teeth in people with complete adentia, to predict the shape and size of dental arches when treatment of patients with occlusion anomalies in order to achieve an optimal functional and aesthetic result.

scholarly journals Diagnosis of abnormalities of upper dental arch and its segments

2013 ◽  
Vol 94 (1) ◽  
pp. 131-133
Author(s):  
F S Ayupova
Keyword(s):  
Orthodontic Treatment ◽  
Treatment Plan ◽  
Medical Chart ◽  
Dental Arch ◽  
Graphic Method ◽  
Visual Examination ◽  
Dental Crowns ◽  
Adobe Photoshop ◽  
Before And After ◽  
Plaster Models

Aim. To improve the graphic method of analysis of the upper dental arch and its segments, to increase the accuracy of upper dental arch abnormalities detection and to minimize orthodontist’s man-hours. Methods. The plaster models of 32 maxillae with dentoalveolar abnormalities were studied before and after treatment. The graphs of individual normal dental arches and its sizes were created by using the geometric and graphic method by Hawley-Herber-Herbst. The regularities were found based on the gained data; graphs of individual normal dental arches (stereotyped patterns) were created using the Adobe Photoshop CS3 software. Dentoalveolar abnormalities were visually examined by directed applying the stereotyped patterns and pictured before and after treatment. 64 models were examined overall. Results. A relation was found: incisors and canines dental crowns half-sum relates to the length and width of Hawley-Herber-Herbst individual normal dental arch graph as 1:2,3:1,3. Considering the relation found, the set of stereotyped patterns was created. The pattern was chosen for the studied model according to the patient incisors and canines dental crowns width. The visual examination allows to recognize and to record (take a picture) teeth malposition, abnormalities of the upper dental arch and its segments in transverse and sagittal planes for correction control. The photos of the models at different stages of orthodontic treatment with stereotyped patterns applied can be added to the patients’ medical chart, indicating the present occlusal rehabilitation success. Conclusion. The offered way of detection of upper dental arch and its segments abnormalities does not require significant time to be performed, is informative and can be implied to clarify the dentoalveolar abnormalities treatment plan.

Sign in / Sign up

Export Citation Format

Share Document