Interocclusal Records in Fixed Prosthodontics

2019 ◽  
Vol 8 (3) ◽  
pp. 40-47
Author(s):  
Naren Thanabalan ◽  
Kiran Amin ◽  
Kasim Butt ◽  
George Bourne
Keyword(s):  
Fixed Prosthodontics ◽  
Vertical Support ◽  
Vertical Relationship ◽  
Mandibular Teeth ◽  
Relationship Of ◽  
Interocclusal Records ◽  
Dental Casts

An accurate interocclusal record is essential for the successful delivery of fixed prosthodontic restorations. There are various materials and techniques used to obtain an interocclusal record in order to facilitate mounting of the dental casts on an articulator. The interocclusal record describes the vertical and horizontal relationship of the maxillary and mandibular teeth. In circumstances where the vertical relationship is not supported through a tripod of widely spaced opposing contacts, the interocclusal record will be needed to restore this vertical support to prevent inaccurate mounting. The clinician should understand when an interocclusal record is required and have an awareness of the different materials and techniques available to record an interocclusal registration.

The Relationship of Crowding to the Eruptive Position of the Lower Permanent Incisors

1993 ◽  
Vol 20 (4) ◽  
pp. 333-337
Author(s):  
C. Deery
Keyword(s):  
Mixed Dentition ◽  
Reflex Microscope ◽  
Relationship Of ◽  
The Relationship ◽  
Dental Casts

The aim of this study was to examine the positions of newly erupted lower permanent incisors and their relationship to crowding. Forty-one crowded and 37 uncrowded dental casts of children in the early mixed dentition were examined by means of digitization using a reflex microscope. Two aspects of alignment were considered: rotation and labio-lingual displacement. Rotations of the incisors were defined as deviations from ‘ideal’ predicted angles. Displacement of the incisors was measured as the distance between the most labial and most lingually placed incisors. The study showed an increase in rotations amongst the crowded sample. The result of the investigation of the relationship between crowding and displacement was inconclusive. There would appear to be significant differences between the positions of newly erupted crowded and uncrowded incisors. Crowding, however, was not the only factor causing irregularity.

Interocclusal records in fixed prosthodontics

2013 ◽  
Vol 4 (3) ◽  
pp. 120 ◽  
Author(s):  
Divya Mittal ◽  
BalvinderSingh Saluja
Keyword(s):  
Fixed Prosthodontics ◽  
Interocclusal Records

scholarly journals Oral Rehabilitation with Removable Partial Denture of a Patient with Cleidocranial Dysplasia

2020 ◽  
Vol 2020 ◽  
pp. 1-6
Author(s):  
Ali Jamali Ghomi ◽  
Reza Sayyad Soufdoost ◽  
Mohammad Saeed Barzegar ◽  
Mohammad Ali Hemmati
Keyword(s):  
Cleidocranial Dysplasia ◽  
Oral Rehabilitation ◽  
Removable Partial Denture ◽  
Partial Denture ◽  
Masticatory Function ◽  
Comprehensive Information ◽  
History Of ◽  
Soft Liner ◽  
Mandibular Teeth ◽  
Relationship Of

This case report describes the oral rehabilitation of a patient with cleidocranial dysplasia who received a removable partial denture along with silicone-based permanent soft liner to improve esthetic and masticatory function. This patient was the candidate of neither implant nor orthodontic treatment due to medical conditions, history of mandible fracture, age, and risk of fracture after mandibular teeth extractions. Cone-beam computed tomography has made it possible to obtain comprehensive information regarding the morphology and positional relationship of impacted supernumerary teeth. Also, proper collaboration between surgeon and prosthodontist helped to achieve significant improvements in patient’s self-esteem, masticatory function, and esthetic.

scholarly journals Photoelastic Study of the Effects of Occlusal Surface Morphology on Tooth Apical Stress from Vertical Bite Forces

2004 ◽  
Vol 5 (1) ◽  
pp. 74-93 ◽  
Author(s):  
Mei-Qing Wang ◽  
Min Zhang ◽  
Jun-Hua Zhang
Keyword(s):  
Surface Morphology ◽  
Occlusal Surface ◽  
Posterior Teeth ◽  
Occlusal Contact ◽  
Test Assembly ◽  
Photoelastic Study ◽  
Normal Occlusion ◽  
Occlusal Surfaces ◽  
Mandibular Teeth ◽  
Relationship Of

Abstract The aim of the study was to determine how the morphology of occlusal surfaces might affect occlusal loading that is transferred to the tooth apex. Photoelastic methods were used to assess apical stress generated by seven variations of occlusions. A test assembly with a 2 kg weight was applied to teeth to create a vertical load. By analyzing the direction and magnitude of the apical principle stress under the polar light that was measured at the apexes of mandibular teeth, the occlusal loading position of each tooth and its direction was obtained based on general mechanical principles. It was found distal incline planes (or slopes) of cusps and lingual incline planes (or slope) of buccal cusps of mandibular posterior teeth carried the greatest occlusal load in normal occlusion. In the other six variations of occlusion presented in this study, the principle apical stresses changed more or less as a result of the different occlusal contact relationships. The magnitude of principle apical stress increased considerably in the flat surface occlusion because of the lack of distribution of occlusion loading by the smooth dentition surface. It is concluded the occlusal surface morphology has a significant effect on the direction and magnitude of apical stress. To establish a suitable relationship of occlusion that can conduct favorable occlusal loading physiologically is very important. Citation Wang M, Zhang M, Zhang J. Photoelastic Study of the Effects of Occlusal Surface Morphology on Tooth Apical Stress from Vertical Bite Forces . J Contemp Dent Pract 2004 February;(5)1:074-093.

Accuracy of Buccal Scan Procedures for the Registration of Habitual Intercuspation

2018 ◽  
Vol 43 (6) ◽  
pp. 573-580 ◽  
Author(s):  
M Zimmermann ◽  
A Ender ◽  
T Attin ◽  
A Mehl
Keyword(s):  
Statistical Analysis ◽  
Analysis Software ◽  
Scheffe Test ◽  
Intraoral Scanning ◽  
Significant Difference ◽  
Mandibular Teeth ◽  
Post Hoc ◽  
Relationship Of ◽  
Scanning Systems

SUMMARY Clinical Relevance: Accurate reproduction of the jaw relationship is important in many fields of dentistry. Maximum intercuspation can be registered with digital buccal scan procedures implemented in the workflow of many intraoral scanning systems. Objective: The aim of this study was to investigate the accuracy of buccal scan procedures with intraoral scanning devices for the registration of habitual intercuspation in vivo. The hypothesis was that there is no statistically significant difference for buccal scan procedures compared to registration methods with poured model casts. Methods and Materials: Ten individuals (full dentition, no dental rehabilitations) were subjects for five different habitual intercuspation registration methods: (CI) poured model casts, manual hand registration, buccal scan with inEOS X5; (BC) intraoral scan, buccal scan with CEREC Bluecam; (OC4.2) intraoral scan, buccal scan with CEREC Omnicam software version 4.2; (OC4.5β) intraoral scan, buccal scan with CEREC Omnicam version 4.5β; and (TR) intraoral scan, buccal scan with Trios 3. Buccal scan was repeated three times. Analysis of rotation (Rot) and translation (Trans) parameters was performed with difference analysis software (OraCheck). Statistical analysis was performed with one-way analysis of variance and the post hoc Scheffé test (p<0.05). Results: Statistical analysis showed no significant (p>0.05) differences in terms of translation between groups CI_Trans (98.74±112.01 μm), BC_Trans (84.12±64.95 μm), OC4.2_Trans (60.70±35.08 μm), OC4.5β_Trans (68.36±36.67 μm), and TR_Trans (66.60±64.39 μm). For rotation, there were no significant differences (p>0.05) for groups CI_Rot (0.23±0.25°), BC_Rot (0.73±0.52°), OC4.2_Rot (0.45±0.31°), OC4.5β_Rot (0.50±0.36°), and TR_Rot (0.47±0.65°). Conclusions: Intraoral scanning devices allow the reproduction of the static relationship of the maxillary and mandibular teeth with the same accuracy as registration methods with poured model casts.

scholarly journals Longitudinal changes in the molar relationship from primary to permanent dentition

2009 ◽  
Vol 8 (2) ◽  
pp. 171-176 ◽  
Author(s):  
André Luiz Tannus Dutra ◽  
Patrícia Medeiros Berto ◽  
Letícia Diniz Santos Vieira ◽  
Orlando Ayrton de Toledo
Keyword(s):  
Preschool Children ◽  
Class Ii ◽  
Permanent Dentition ◽  
Primary Dentition ◽  
Class I ◽  
Class Iii ◽  
Longitudinal Changes ◽  
Relationship Of ◽  
Dental Casts

Preschool children (n=721) aged between 4 and 5 years were examined and 60 were selected. Two pairs of dental casts were obtained for each child. The first pair was from primary dentition before eruption of permanent first molars; the second pair had the permanent first molars in occlusion. The sample was divided into 3 groups, according to the terminal plane. The findings indicate that 55% of the group with flush terminal plane developed into Class I, 40% into Class II, and 5% into Class III molar relationship in the permanent dentition. The group with mesial step, 70% progressed to Class I, 25% to Class II, and 5% to Class III molar relationship in the permanent dentition. Finally, the group with distal step developed into Class II in the permanent dentition. It can be concluded that the terminal relationship of deciduous second molars was associated with the permanent first molars occlusion.

scholarly journals INTEROCCLUSAL RECORDS IN PROSTHODONTIC REHABILITATIONS - MATERIALS AND TECHNIQUES - A LITERATURE REVIEW

2012 ◽  
Vol 02 (03) ◽  
pp. 54-60 ◽  
Author(s):  
Krishna Prasad D. ◽  
B. Rajendra Prasad ◽  
Anupama Prasad D. ◽  
Divya Mehra
Keyword(s):  
Literature Review ◽  
Dimensional Stability ◽  
Complex Relationship ◽  
Interocclusal Records ◽  
Dental Casts

AbstractTo achieve a successful prosthesis it is important to achieve harmony between the maxillomandibular relationship and anatomy of patient. This relationship is not simple opening or closing, but a complex relationship which exists in 3 dimensions. Variations may occur in any direction – vertical, anteroposterior, or mediolateral. Thus, it is essential to record this relationship with the least possible error to obtain a successful prosthesis. However when relating the maxillary and mandibular dental casts, the ultimate accuracy depends on accuracy and dimensional stability of the material and the technique used to record the maxillomandibular relationship.

The relationship of the scleractinian corals to the rugose corals

Paleobiology ◽  
1980 ◽  
Vol 6 (02) ◽  
pp. 146-160 ◽  
Author(s):  
William A. Oliver
Keyword(s):  
Critical Points ◽  
Scleractinian Corals ◽  
Convincing Evidence ◽  
Early Triassic ◽  
Rugose Corals ◽  
History Of ◽  
The Subject ◽  
Relationship Of ◽  
The Relationship ◽  
Biologic Factors

The Mesozoic-Cenozoic coral Order Scleractinia has been suggested to have originated or evolved (1) by direct descent from the Paleozoic Order Rugosa or (2) by the development of a skeleton in members of one of the anemone groups that probably have existed throughout Phanerozoic time. In spite of much work on the subject, advocates of the direct descent hypothesis have failed to find convincing evidence of this relationship. Critical points are:(1) Rugosan septal insertion is serial; Scleractinian insertion is cyclic; no intermediate stages have been demonstrated. Apparent intermediates are Scleractinia having bilateral cyclic insertion or teratological Rugosa.(2) There is convincing evidence that the skeletons of many Rugosa were calcitic and none are known to be or to have been aragonitic. In contrast, the skeletons of all living Scleractinia are aragonitic and there is evidence that fossil Scleractinia were aragonitic also. The mineralogic difference is almost certainly due to intrinsic biologic factors.(3) No early Triassic corals of either group are known. This fact is not compelling (by itself) but is important in connection with points 1 and 2, because, given direct descent, both changes took place during this only stage in the history of the two groups in which there are no known corals.

Skeletal elements of crinoid echinoderms: High-resolution structural and microanalytical results

1983 ◽  
Vol 41 ◽  
pp. 194-195
Author(s):  
D. F. Blake ◽  
L. F. Allard ◽  
D. R. Peacor
Keyword(s):  
High Resolution ◽  
Marine Invertebrates ◽  
Sea Urchins ◽  
Structural Features ◽  
Sea Stars ◽  
High Resolution Tem ◽  
Relationship Of ◽  
The Relationship ◽  
Insight Into

Echinodermata is a phylum of marine invertebrates which has been extant since Cambrian time (c.a. 500 m.y. before the present). Modern examples of echinoderms include sea urchins, sea stars, and sea lilies (crinoids). The endoskeletons of echinoderms are composed of plates or ossicles (Fig. 1) which are with few exceptions, porous, single crystals of high-magnesian calcite. Despite their single crystal nature, fracture surfaces do not exhibit the near-perfect {10.4} cleavage characteristic of inorganic calcite. This paradoxical mix of biogenic and inorganic features has prompted much recent work on echinoderm skeletal crystallography. Furthermore, fossil echinoderm hard parts comprise a volumetrically significant portion of some marine limestones sequences. The ultrastructural and microchemical characterization of modern skeletal material should lend insight into: 1). The nature of the biogenic processes involved, for example, the relationship of Mg heterogeneity to morphological and structural features in modern echinoderm material, and 2). The nature of the diagenetic changes undergone by their ancient, fossilized counterparts. In this study, high resolution TEM (HRTEM), high voltage TEM (HVTEM), and STEM microanalysis are used to characterize tha ultrastructural and microchemical composition of skeletal elements of the modern crinoid Neocrinus blakei.

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