Cardinal differences in occlusion of natural teeth and that of artificial teeth

1962 ◽  
Vol 64 (4) ◽  
pp. 482-485
Author(s):  
Peter F. Fedi
2020 ◽  
Vol 9 (35) ◽  
pp. 32-39
Author(s):  
Ianca Zany Nunes Corrêa ◽  
Erika Akiko Moura Shiota ◽  
Ely Moacyr De Souza Portela ◽  
Gabriel Garcia Bardales ◽  
Francisco Pantoja Braga ◽  
...  

Immediate complete denture (ICD) is a mucosa-supported prosthesis manufactured before the removal of natural teeth and installed soon after their extraction. This paper aims to describe a clinical case of oral rehabilitation with upper ICD and lower removable partial denture (RPD). A 57-year-old female patient sought treatment with dissatisfaction with her aesthetics and mobility of the upper teeth. After anamnesis, intra and extra-oral examinations, radiographic examination and analysis of study models mounted on a semi-adjustable articulator, periodontal pockets were found in the upper teeth and extensive bone loss. So, upper tooth extraction, superior ICD and lower RPD were indicated as treatment. For ICD preparation, anatomical and functional moldings were made, made up of orientation and intermaxillary relationship plans for the assembly of the semi-djustable articulator models. The remaining upper teeth were removed from the model for assembly of the artificial teeth and the ICD was polymerized and polished. The lower RPD was made following the standard steps. After dentures manufacturing, the surgery for upper tooth extraction was performed and prostheses installed immediately after surgery. The results demonstrated that the performed treatment provided aesthetic, phonetic, and functional restoration to the patient avoiding her to undergo a period of edentulism. It was concluded that ICD is a good indication for prosthetic rehabilitation of patients with advanced periodontitis, whose planning is the exodontia of all the teeth of an arch.


2021 ◽  
Vol 7 (3) ◽  
pp. 137-142
Author(s):  
Kunal K Kohle ◽  
Deepak Vikhe ◽  
Vijaysingh Tanpure ◽  
Sanyukta Ingale

The proper knowledge of speech production and phonetic parameters will enables the clinician in fabrication of dentures with good phonetic capabilities. In achieving the optimum phonetic potential by providing correlation among three key objectives i.e. (mechanics, aesthetics and phonetics) of dentistry is the eventual goal of every dentist. This article provides a correlation between occlusion and speech, since the time these two factors are mostly not considered related to each other. But during phonation, the lower teeth functions independently and there remain no contact with upper teeth. This article also highlights the basic utilization of phonation as an indispensible part in placement of upper anterior teeth in complete and partial denture rehabilitation. This is basically because, while restoring natural teeth, we may have to depend on pre-extraction records in order to achieve necessary objectives. And if these records are missing, it is difficult to determining the position of artificial teeth. Hence here, we use phonetics as a guideline for proper placement of artificial teeth.


Author(s):  
Kyosuke Oki ◽  
Yoichiro Ogino ◽  
Yuriko Takamoto ◽  
Mikio Imai ◽  
Yoko Takemura ◽  
...  

The purpose of this study was to evaluate the effect of posterior occlusal support of natural teeth and artificial teeth on oral functions and standing motion. Patients who had been treated with removable prostheses were enrolled as the subjects. Their systemic conditions (body mass index (BMI) and skeletal muscle mass index (SMI)) were recorded. The subjects were classified into two groups according to a modified Eichner index: B1–3 (with posterior occlusal support) and B4C (without posterior occlusal support). Maximum occlusal force (MOF), masticatory performance (MP), and standing motion (sway and strength) were evaluated for cases with and without removable prostheses. There were no significant differences in BMI and SMI between the B1–3 group and the B4C group. The subjects with removable prostheses demonstrated significantly higher values in MOF, MP, and sway and strength than the subjects without removable prostheses. The comparison of oral functions between the B1–3 group and the B4C group revealed that the positive effect of posterior occlusal support of natural teeth and removable prostheses and the significant positive effects of posterior occlusal support on standing motion were partly observed in these comparisons. Posterior occlusal support of natural teeth and even of removable prostheses may contribute to the enhancement of oral functions and standing motion.


Lubricants ◽  
2019 ◽  
Vol 7 (6) ◽  
pp. 52 ◽  
Author(s):  
Antonio Lanza ◽  
Alessandro Ruggiero ◽  
Ludovico Sbordone

Since 1966 the term “tribology” has integrated different topics like friction, lubrication and wear. After a few years, interest in this type of phenomena rapidly spread out around the world of biology and medicine, determining a new research area defined as biotribology. This commentary is conceived within this framework with the aim of underlining the close link between tribology and dentistry regarding both physiological and restorative issues. The contact between teeth requires investigation into their tribological behavior focusing on the enamel wear process against natural teeth and/or artificial teeth, allowing us to obtain useful information on the tribological behavior of restorative materials. Thus, tested materials may be natural teeth, restorative materials (metal alloys, ceramics, composites) or both. This work aims to make a contribution to underlining the need for greater standardization of tribological experimental procedures as well as to obtaining more homogeneous and indicative results on the tested tribo systems.


e-GIGI ◽  
2020 ◽  
Vol 8 (2) ◽  
Author(s):  
Sanny C. Korah ◽  
Damajanty H.C. Pangemanan ◽  
Vonny N. S. Wowor

Abstract: Loss of natural teeth, whether it is replaced with artificial teeth or not, can affect the quality of life (QoL), especially in relation to oral health. This study was aimed to determine the differences in the QoL of elderly between denture wearers and non denture wearers. This was a literature review study. There were five literatures in this study; three literatures used the GOHAI questionnaire as a research instrument meanwhile the others used the OHIP-14 questionnaire. The results showed that the measuring instrument most widely used was GOHAI. Based on age, the QoL of denture wearers and non denture wearers became worse as they became older. Based on sex, the QoL of the non denture wearers was better in males than in females, albeit, there was no difference between sex among the denture wearers. In conclusion, the QoL of denture wearers was better than of non denture wearers. Moreover, the QoL of denture wearers was relatively good, meanwhile the QoL of non denture wearers was poor.Keywords: quality of life, elders, denture, tooth loss Abstrak: Kehilangan gigi asli yang digantikan dengan gigi tiruan maupun tidak, dapat meme-ngaruhi kualitas hidup, khususnya kualitas hidup terkait kesehatan gigi dan mulut. Penelitian ini bertujuan untuk mengetahui perbedaan kualitas hidup lansia pengguna dan bukan pengguna gigi tiruan. Jenis penelitian ialah studi pustaka. Total pustaka yang diteliti berjumlah lima buah. Terdapat tiga pustaka yang menggunakan kuesioner GOHAI sebagai instrumen penelitian, sedangkan dua lainnya menggunakan kuesioner OHIP-14. Hasil penelitian menunjukkan bahwa alat ukur yang paling banyak digunakan yaitu GOHAI. Berdasarkan usia, semakin bertambahnya usia, kualitas hidup lansia pengguna dan bukan pengguna gigi tiruan semakin buruk. Berdasarkan jenis kelamin, kualitas hidup lansia bukan pengguna gigi tiruan lebih baik pada laki-laki daripada perempuan, sedangkan pada lansia pengguna gigi tiruan, hasilnya seimbang. Simpulan penelitian ini ialah kualitas hidup lansia pengguna gigi tiruan lebih baik daripada bukan pengguna gigi tiruan. Kualitas hidup lansia pengguna gigi tiruan tergolong baik sedangkan kualitas hidup lansia bukan pengguna gigi tiruan tergolong buruk.Kata kunci: kualitas hidup, lansia, gigi tiruan, kehilangan gigi


Author(s):  
Apoorva Dhopte ◽  
Anita Kahar ◽  
Jayashree Joshi ◽  
Usha Radke

Background–In the World where we live today, our appearance mainly influences our interaction with others. Teeth play a major role in maintaining our self-image. Loss of teeth is a serious matter and can also lead to disrupted social activities. Aims and Objectives - To assess the attitude towards replacement of missing teeth among patients visiting VSPM DCRC, Nagpur, according to their age, gender and socio-economic status. Materials and Methods– A cross-sectional study was conducted on patients attending the VSPM DCRC, Nagpur ,over a period of one month. A questionnaire containing 9 items was used. Result- A patient population of 310 was surveyed in this study. Out of this, 111 (36%) were females and 199 (64%) were males. Out of these 310 respondents, 248(80%) thought that missing teeth should be replaced and 254 (82%) said artificial teeth are equal to natural teeth in function and appearance whereas 20 (7%) said they created problems. Conclusion – The overall attitude of patients towards teeth replacement was good. Majority of them showed awareness regarding teeth replacement but some could not do it because of low socioeconomic status.   Key Words – Teeth Replacement, awareness, attitude, patients, missing teeth, socioeconomic status.


2020 ◽  
Author(s):  
James Dudley

Abstract Background The use of artificial teeth in pre-clinical simulation clinic teaching of post-core techniques has clear educational benefits for students and staff. This study explored the reasons for selection and direct student experiences with artificial teeth in a recently conducted pre-clinical fixed prosthodontics post-core technique teaching program. Methods An online anonymous survey was delivered to fourth year undergraduate dental students who had completed the fixed prosthodontics pre-clinical program seeking information on the choice of artificial or natural teeth and direct experiences. Quantitative data was summarised and qualitative data was clustered into topics. Results A 100% response rate was received. 36% of 70 respondents chose to use one or more artificial teeth for the post-core exercises which was predominantly driven by difficulty in sourcing appropriate natural teeth (59%) rather than educational benefit (13%). 45 (64%) chose not to use artificial teeth largely due to the cost of the teeth (49%). Conclusions Direct student experiences in using the artificial teeth for post-core exercises were positive. In the choice to select artificial or natural teeth for post-core exercises, teaching staff may focus on educational benefits while students focus on the practicalities of sourcing teeth, associated costs and ease of use. As the first known research of its kind, within the limitations of this study artificial teeth provided an appropriate and realistic simulation compared to extracted natural teeth and were easier to source for the post-core exercises of the pre-clinical fixed prosthodontics program. More widespread use of artificial teeth was limited by cost.


2020 ◽  
Author(s):  
James Dudley

Abstract Background The use of artificial teeth in pre-clinical simulation clinic teaching of post-core techniques has clear educational benefits for students and staff. The aim of this study was to explore the reasons for selection and direct student experiences with artificial teeth in a recently conducted pre-clinical fixed prosthodontics post-core technique teaching program. Methods An online anonymous survey was delivered to fourth year undergraduate dental students who had completed the fixed prosthodontics pre-clinical program seeking information on the choice of artificial or natural teeth and direct experiences. Quantitative data was summarised and qualitative data was clustered into topics. Results A 100% response rate was received. 36% of 70 respondents chose to use one or more artificial teeth for the post-core exercises which was predominantly driven by difficulty in sourcing appropriate natural teeth (59%) rather than educational benefit (13%). 45 (64%) chose not to use artificial teeth largely due to the cost of the teeth (49%). Conclusions Direct student experiences in using the artificial teeth for post-core exercises were positive. In the choice to select artificial or natural teeth for post-core exercises, teaching staff may focus on educational benefits while students focus on the practicalities of sourcing teeth, associated costs and ease of use. As the first known research of its kind, within the limitations of this study artificial teeth provided an appropriate and realistic simulation compared to extracted natural teeth and were easier to source for the post-core exercises of the pre-clinical fixed prosthodontics program. More widespread use of artificial teeth was limited by cost.


2020 ◽  
Vol 10 (37) ◽  
pp. 38-45
Author(s):  
Lara Pepita de Souza Oliveira ◽  
Rebeka de Oliveira Reis ◽  
Ely Moacyr de Souza Portela ◽  
Sybilla Torres Dias ◽  
Cristiane Maria Brasil Leal

Dental ceramics have an excellent ability to reproduce natural teeth appearance, but once the substrate has an altered coloration, it is necessary to mask this intercurrence, considering the characteristics of the ceramic and cement selected. This article aims to present a clinical case of rehabilitation with ceramic laminates to mask a darkened central incisor by planning a more opaque porcelain structure under a translucent contact lens. A female patient sought dental care complaining of dissatisfaction with smile aesthetics. It was clinically identified the presence of a Class IV darkened restoration in composite resin in element 11. In treatment planning harmony in the shape and color of elements 11 and 21 was aimed at through lithium disilicate lenses. An opaque intermediate structure was used to cover the darkening in tooth 11. The double molding technique was performed to obtain the working model. Prior to cementing, the surfaces were treated. In ceramics, conditioning with 10% hydrofluoric acid and 37% phosphoric acid, silane application and universal adhesive; in dental substrate, conditioning with 37% phosphoric acid and application of universal adhesive were performed. In laminates definitive cementation Allcem Venner cement was chosen. Patient reported satisfaction with treatment final aesthetics. Thus, cementation technique of a translucent laminate over an opaque facet is a good option for masking substrates with darkened coloration.


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