Balkwill’s angle, occlusal plane, mandibular shape, and curve of Spee

CRANIO® ◽  
2022 ◽  
pp. 1-9
Author(s):  
Estelle Casazza ◽  
Jean-Daniel Orthlieb ◽  
Anne Giraudeau ◽  
Jean-Philippe Ré
Keyword(s):  
Occlusal Plane ◽  
Curve Of Spee

scholarly journals Condylographic recording of masticatory function: explorative study on occlusal parameters and chewing performance with natural food and a standard food model

2021 ◽  
Vol 8 (1) ◽  
pp. 52-64
Author(s):  
Giulia Tanteri ◽  
◽  
Carlotta Tanteri ◽  
Gregor Slavicek ◽  
◽  
...  
Keyword(s):  
Oral Health ◽  
Three Dimensional ◽  
Oral Health Status ◽  
Occlusal Plane ◽  
Natural Food ◽  
Curve Of Spee ◽  
Standard Food Model ◽  
Occlusal Surfaces ◽  
Therapeutic Measures ◽  
Food Model

Introduction Loss of teeth defines oral health status and chewing abilities. Caries and periodontal disease have been associated with systemic diseases, however they may contribute to cognitive impairment too. Mastication assessment appears to possess broad significance, and is needed to create background knowledge for chewing harmony. The aim of this study was to evaluate chewing performance and the characteristics of condylographic recordings, during mastication of Natural Food (NF) and a Standard Food Model (SFM), in subjects with different occlusal parameters. Methodology Twenty-three adult subjects’ mastication was assessed with a standardized recording protocol, when chewing onto SFM and NF in three different textures. Detailed occlusal characteristics, condylographic recording data and condylographic patterns during mastication were all analyzed and compared. Results Bilateral Crossbites, Missing Molars and Asymmetric Molar Class were related to higher disharmony and transversal displacement during chewing. Missing and unreplaced molars showed dysfunctional patterns and so did worn out occlusal surfaces. Molar Class alone did not prove to be a useful predictor in chewing test results. Conclusion Increasing evidence indicates that oral health has an impact on Individual and Public Health. It is important to understand that oral health and its functional status are to be maintained during one’s lifetime, and that preventive, therapeutic measures at all ages should have a common functional target to grant neurobiological health as well as nutritional goals of Mastication. Further studies are needed to better understand the relevance of additional parameters such as Occlusal Plane Inclination, Curve of Spee, and three-dimensional asymmetries.

scholarly journals A Cephalometric Study to Determine the Center of Anteroposterior Curve of Occlusion in the Cranium

2013 ◽  
Vol 14 (5) ◽  
pp. 836-841 ◽  
Author(s):  
V Vinod ◽  
R Balamurugan ◽  
Sanjay Nilawar ◽  
Thota Kiran Kumar ◽  
Vivek Thomas ◽  
...  
Keyword(s):  
Occlusal Plane ◽  
Tooth Morphology ◽  
Long Span ◽  
Curve Of Spee ◽  
Anterior Teeth ◽  
Natural Dentition ◽  
Cephalometric Study ◽  
Relationship Of ◽  
The Relationship ◽  
Posterior Restorations

ABSTRACT Proper management of the occlusal plane is an essential consideration when multiple long span posterior restorations are designed. When restorations are added to an existing tooth arrangement characterized by rotated, tipped or extruded teeth, excursive interferences may be incorporated. The curve of Spee which exists in natural dentition, allows harmony to exist between the anterior teeth and the condylar guidance. Broadrick flag or occlusal plane analyzer is used to assist in the reproduction of tooth morphology that is commensurate with the curve of Spee when posterior restorations are designed; its use prevents the introduction of protrusive interferences. The current study determines the relationship of the center of anteroposterior curve of occlusion in the cranium and its relationship to other cephalometric landmarks and also evaluates the relationship of anteroposterior curve of occlusion to the condyle. How to cite this article Kumar TK, Thomas V, Nilawar S, Balamurugan R, Marwaha BS, Vinod V. A Cephalometric Study to Determine the Center of Anteroposterior Curve of Occlusion in the Cranium. J Contemp Dent Pract 2013;14(5):836-841.

scholarly journals Reliability of Broadrick Flag in Determination of Curve of Spee in Indian Population

2012 ◽  
Vol 13 (5) ◽  
pp. 627-631
Author(s):  
KN Jagadeesh ◽  
HM Kashinatha ◽  
Mahanthesh S Bembalgi ◽  
PC Ramesh Kumar ◽  
Kiran Babu Yarlagadda ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Indian Population ◽  
Occlusal Plane ◽  
Male And Female ◽  
Reliable Tool ◽  
Curve Of Spee ◽  
Posterior Restorations

ABSTRACT Introduction Occlusion and occlusal plane is the primary criteria in fabrication of posterior restorations. The simplest method of establishment of occlusal plane is through the use of Broadrick occlusal plane analyzer. Aims This study aims to know the reliability of Broadrick flag in determination of curve of Spee with different proposed radii in different skeletal relation in Indian population. Materials and methods Male and female dentulous subjects were selected randomly. Maxillary and mandibular full arch impressions were made; casts were prepared and mounted in semiadjustable articulator using face bow transfer. Broadrick occlusal plane analyzer was mounted on upper member of articulator. Analysis was done using the proposed radii of curvature. The same procedure was repeated by taking different radii with variations of ¼ inch, difference was measured by metal caliper, tabulated and subjected to statistical analysis. Results Results showed that Indian subjects show minor variations in radii, but most of the subjects confirmed the radii, which was proposed by the Lynch CD and McConnell RJ. Conclusion Statistical analysis confirmed that proposed radii confirms to existing occlusal plane for different skeletal relationships. Broadrick occlusal plane analyzer is a reliable tool with the proposed radii for Indian population. How to cite this article Jagadeesh KN, Kashinatha HM, Bembalgi MS, Ramesh Kumar PC, Yarlagadda KB, Ateeq PM. Reliability of Broadrick Flag in Determination of Curve of Spee in Indian Population. J Contemp Dent Pract 2012;13(5):627-631.

Evaluation of the curve of Spee, curve of Wilson and Monson’s sphere in Iranian adults: A preliminary three-dimensional study

2020 ◽  
Author(s):  
Mahdie Chavoshzadeh Natanzi ◽  
Maryam Azimi Zavaree ◽  
Mehran Torabi ◽  
Farnaz Taghavi-Damghani ◽  
Seyed Mohammad Reza Hakimaneh ◽  
...  
Keyword(s):  
Racial Differences ◽  
Three Dimensional ◽  
Spherical Model ◽  
Occlusal Plane ◽  
Dental Arch ◽  
3 Dimensional ◽  
Curve Of Spee ◽  
Occlusal Surfaces ◽  
The Mean ◽  
Mandibular Teeth

Purpose : One of the required information in rehabilitating the occlusal plane in dentistry is the radius of Monson’s sphere , which like other anatomical indices varies in different races. The purpose of this study was to determine the radius of the Monson’s  sphere in a group of  Iranian. Materials & Methods  : 45 Iranian subjects (19 males & 26 females ) aged from 18 to 25 were selected for this study . The x,y,z coordinates of cusp tips of all  mandibular teeth except for the third molars obtained  with a 3-dimensional digitizer , were used to  derive a spherical model  of the occlusal surfaces’ curvature . From the best interpolating sphere , the radii of the Monson’s sphere was computed . Results : Although all of the computed variables were greater in men , the occlusal curvature of mandibular arch was not influenced by gender . The mean radius of the Monson’s  sphere was 111.5 mm ( 121 mm in men and 104 mm in women which was closer to the classic value of 4 inch , confirming Monson’s observations ) . Conclusion  : The average radius of the Monson’s sphere in this study was greater than the classic 4 inch value proposed by Monson and this result may suggest racial differences in the normal dental arch form that is important in occlusal rehabilitation. Although more researches are necessary in future to improve treatment results.

scholarly journals Full Mouth Rehabilitation Performed Using Customized Broadrick’s Flag to Restore Mandibular Posterior Teeth-A Case Report

2019 ◽  
pp. 24-28
Author(s):  
Rahul Patil ◽  
Omkar Shetty
Keyword(s):  
Case Report ◽  
Occlusal Plane ◽  
Posterior Teeth ◽  
Correct Orientation ◽  
Curve Of Spee ◽  
Survey Point ◽  
Custom Made ◽  
Full Mouth Rehabilitation ◽  
Mandibular Posterior Teeth ◽  
Posterior Restorations

Full mouth rehab is an extremely challenging procedure. It needs proper planning and thorough knowledge about the steps involved in the procedure. The patient’s occlusal plane has to be restored in harmony with the tmj and the prosthesis which is to be fabricated. An instrument called the “Occlusal plane analyzer” is used to assist the Prosthodontist in the development of an initial mandibular occlusal plane that is commensurate with the curve of Spee when posterior restorations are designed in diagnostic casts and later as an integral of definitive restorations as well as guidelines for the actual tooth preparations. After complete examination of the reported case, it was planned for full mouth rehabilitation. Pankeymann philosophy was planned to be used for rehabilitation. Bopa being one of the important steps as per the philosophy for restoration of mandibular posterior teeth, it was discussed in detail. The article demonstrates the making and use of a custom made broad rickocclusal plane analyser (bopa) on a semi adjustable articulator to determine the correct orientation of the occlusal plane. Key Words – clear acrylic guide, anterior survey point (A.S.P), posterior survey point (P.S.P), central survey point (C.S.P).

scholarly journals Determination of the Vertical Dimension and the Position of the Occlusal Plane in a Removable Prosthesis Using Cephalometric Analysis and Golden Proportion

2021 ◽  
Vol 11 (15) ◽  
pp. 6948
Author(s):  
Gabriele Cervino ◽  
Sergio Sambataro ◽  
Chiara Stumpo ◽  
Salvatore Bocchieri ◽  
Fausto Murabito ◽  
...  
Keyword(s):  
Vertical Dimension ◽  
Occlusal Plane ◽  
X Rays ◽  
Common Procedure ◽  
Lower Incisor ◽  
Golden Proportion ◽  
The Face ◽  
Removable Prosthesis ◽  
Edentulous Patients

The aim of this study is to demonstrate the use and the effectiveness of cephalometry and golden proportions analysis of the face in planning prosthetic treatments in totally edentulous patients. In order to apply this method, latero-lateral and posterior-anterior X-rays must be performed in addition to the common procedure. Two main concerns for totally edentulous patients are the establishment of the vertical dimension and the new position of the occlusal plane. The divine proportion analysis was carried out by the use of a golden divider. The prosthetic protocol was divided into three steps and a case was selected for better understanding. Referring to the golden relations, if the distance from the chin to the wing of the nose is 1.0, the distance from the nose to eye is 0.618. This proportion is useful and effective in determining the correct prosthetic vertical dimension. The incisal margin of the lower incisor must be positioned between Point A (A) and protuberance menti (Pm) according to the gold ratio 0.618 of the total height A-Pm. Posteriorly the occlusal plane must be placed 2 mm below the divine occlusal plane (traced from the incisal margin of lower incisors to Xi point). A prosthesis made in accordance with cephalometric parameters and divine proportions of the face helps to improve the patient’s aesthetics, function and social personality.

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