scholarly journals Dental Implants

Biomaterials ◽  
2020 ◽  
Author(s):  
İhsan Çağlar Çınar ◽  
B. Alper Gültekin ◽  
Alper Sağlanmak ◽  
Cem Töre
Keyword(s):  
Materials Science ◽  
Contemporary Literature ◽  
Normal Function ◽  
Edentulous Patient ◽  
Normal Limits ◽  
Bone Atrophy ◽  
Removable Prosthesis ◽  
Natural Dentition ◽  
Zirconia Implants ◽  
Missing Tooth

The goal of modern dentistry is to return patients to oral health in a predictable fashion. The partial and complete edentulous patient may be unable to recover normal function, esthetics, comfort, or speech with a traditional removable prosthesis. The patient’s function when wearing a denture may be reduced to one sixth of the level formerly experienced with natural dentition; however, an implant prosthesis may return the function to near-normal limits. The esthetics of the edentulous patient is affected as a result of muscle and bone atrophy. In order to replace a missing tooth, the development of materials science and technology improved the materials for implant application. Nowadays, titanium has become the most popular implant material due to its advantages. The first submerged implant placed by Strock was still functioning 40 years later. Recently, zirconia implants and innovative surface designs are being researched and practiced. In this chapter, these materials will be comparatively discussed through contemporary literature and research.

Unconventional Dentures: A Manifestation of New Vision in Prosthesis Construction

2020 ◽  
Vol 11 (1) ◽  
pp. 101-108
Author(s):  
Prabal Sharma ◽  
Bhumika Sharma
Keyword(s):  
Slight Modification ◽  
Daily Practice ◽  
Complete Denture ◽  
Edentulous Patient ◽  
Clinical Procedures ◽  
Removable Prosthesis ◽  
New Vision ◽  
Edentulous Patients ◽  
Natural Dentition ◽  
And Function

Removable prosthesis, that is, complete and/or partial dentures cannot function as a substitute for natural dentition, but they have been and will remain the staple treatment for edentulous patients. An edentulous patient is found to be satisfied if prosthodontic rehabilitation restores his/her function with superior esthetics. However, not every case of edentulism, either complete or partial, can be treated with conventional methods of denture fabrication. When a patient is clinically presented with complications such as severely resorbed ridge, microstomia, hyperplastic and/or flabby tissue, xerostomia, osteoma, bruxism, and labially inclined premaxilla, then it becomes difficult for the dentist to fulfill the patient’s desire for both esthetics and function. There is a need for slight modification in the regular clinical procedures by altering the impression technique or the design of the prosthesis so as to achieve best results in compromised cases, commonly known as unconventional approaches. This article intends to highlight the unconventional approaches for the fabrication of complete denture prosthesis that can be kept in mind when such cases are encountered in our daily practice.

scholarly journals Mechanics of the small punch test: a review and qualification of additive manufacturing materials

2021 ◽  
Vol 56 (18) ◽  
pp. 10707-10744
Author(s):  
Jonathan Torres ◽  
Ali P. Gordon
Keyword(s):  
Additive Manufacturing ◽  
Material Properties ◽  
Materials Science ◽  
Contemporary Literature ◽  
The Body ◽  
Small Punch Test ◽  
Small Punch ◽  
Punch Test ◽  
Testing Data ◽  
The Relationship

AbstractThe small punch test (SPT) was developed for situations where source material is scarce, costly or otherwise difficult to acquire, and has been used for assessing components with variable, location-dependent material properties. Although lacking standardization, the SPT has been employed to assess material properties and verified using traditional testing. Several methods exist for equating SPT results with traditional stress–strain data. There are, however, areas of weakness, such as fracture and fatigue approaches. This document outlines the history and methodologies of SPT, reviewing the body of contemporary literature and presenting relevant findings and formulations for correlating SPT results with conventional tests. Analysis of literature is extended to evaluating the suitability of the SPT for use with additively manufactured (AM) materials. The suitability of this approach is shown through a parametric study using an approximation of the SPT via FEA, varying material properties as would be seen with varying AM process parameters. Equations describing the relationship between SPT results and conventional testing data are presented. Correlation constants dictating these relationships are determined using an accumulation of data from the literature reviewed here, along with novel experimental data. This includes AM materials to assess the fit of these and provide context for a wider view of the methodology and its interest to materials science and additive manufacturing. A case is made for the continued development of the small punch test, identifying strengths and knowledge gaps, showing need for standardization of this simple yet highly versatile method for expediting studies of material properties and optimization.

scholarly journals Posaconazole-Induced Hypertension and Hypokalemia: Mechanistic Evaluation

2017 ◽  
Vol 4 (suppl_1) ◽  
pp. S76-S76
Author(s):  
George R Thompson ◽  
Diana Chang ◽  
Rebecca Wittenberg ◽  
Ian Mchardy ◽  
Alison Semrad
Keyword(s):  
Treatment Options ◽  
Vital Signs ◽  
Normal Function ◽  
Significant Inhibition ◽  
Complete Suppression ◽  
Normal Limits ◽  
Liquid Suspension ◽  
Days Of Therapy ◽  
Apparent Mineralocorticoid Excess

Abstract Background Recent studies have shown the new posaconazole delayed-release tablets have superior bioavailability compared with the liquid suspension formulation. As higher serum posaconazole concentrations have been associated with improved clinical responses, this formulation has been a welcome addition to available treatment options. However, higher serum and tissue levels are likely to reveal previously undescribed toxicity as adverse events attributed to “off-target” effects are observed. Methods We prospectively identified two patients with new onset hypertension, hypokalemia, and alkalosis after starting posaconazole tablets. Patient vital signs and laboratory values were within normal limits prior to starting posaconazole; however, following over 30 days of therapy both patients became newly hypertensive (mean systolic BP increase 59 mmHg). Serum posaconazole levels were 4.3–4.6 μg/ml. Complete suppression of renin and aldosterone, with increased 11-deoxycortisol, estradiol levels, and cortisol/cortisone ratios were observed in both patients. The TTKG in both patients was inappropriately elevated. Results Posaconazole-induced disruption of the steroid biosynthesis pathway in patients has not previously been described, but has been suggested by in vitro studies. Our patients’ laboratory results show clinically significant inhibition of 11β-hydroxysteroid dehydrogenase enzyme type 2 isoform (11β-HSD2) as evidenced by: the elevated 11-deoxycortisol (with subsequent suppression of renin and aldosterone), the highly elevated cortisol/cortisone ratio, and the inappropriately elevated TTKG in the setting of hypokalemia. The normal deoxycorticosterone confirms normal function of 11β-hydroxylase and the observed effects in our patients are thus downstream from this enzyme. Conclusion Our findings support in vitro predictions and highlight the clinical sequelae of posaconazole-mediated inhibition of 11β-HSD2. Additional studies are necessary to determine the frequency of posaconazole induced apparent mineralocorticoid excess syndrome and whether other azole antifungals can be associated with this phenomenon. Disclosures All authors: No reported disclosures.

scholarly journals The Placement of Four Short Implants and Full-Arch Early Loading in the Edentulous Patient Suffering from Severe Mandibular Alveolar Ridge Atrophy

2019 ◽  
Vol 2019 ◽  
pp. 1-4
Author(s):  
Yuri Sedov ◽  
Oleg Mordanov ◽  
Sergei Grigoriev ◽  
Anatoly Avanesov ◽  
Kamil Khabiev
Keyword(s):  
Clinical Case ◽  
Edentulous Patient ◽  
Planning Stage ◽  
Incisive Canal ◽  
Anatomical Structures ◽  
Guided Surgery ◽  
Early Loading ◽  
Short Implants ◽  
Bone Atrophy ◽  
One Year

One of the treatments of patients with severe bone atrophy is short implants. It is important to position short implants taking into account the prosthetic loading and right position according to vital anatomical structures. In the presented case report, a seventy-one-year-old female patient underwent the rehabilitation with four short dental implants placed in the anterior mandibula with fully guided surgery to avoid mandibular incisive canal. It solves all the problems in the planning stage when you determine the osteotomy protocol in advance and the prognosis of future restoration according to patient requirements. This clinical case demonstrates the efficiency of patient rehabilitation with the use of short implants in difficult clinical situations.

scholarly journals Evaluation of masticatory capacity and efficiency in total and partial edentulous patients in Araraquara

2018 ◽  
Vol 5 (2) ◽  
pp. 32
Author(s):  
Patricia Aleixo dos Santos Domingos ◽  
Ana Luísa Botta Martins De Oliveira ◽  
Ariellen Amanda Dos Reis
Keyword(s):  
Tap Water ◽  
Good Efficiency ◽  
Self Evaluation ◽  
Masticatory Efficiency ◽  
Removable Prosthesis ◽  
Efficiency Test ◽  
Edentulous Patients ◽  
Natural Dentition ◽  
The University ◽  
State Examination

Aim: This study aims to compare masticatory performance between total prosthesis users and individuals with partial or total natural dentition to evaluate masticatory capacity and efficiency in individuals in Araraquara/SP.Material and Methods: 31 individuals between 55 and 99 years old were evaluated, both genders, frequent users of Dentistry Clinic of the University of Araraquara (Uniara) and residents at Recanto Feliz, in the same town. A cognitive evaluation was carried out through a mini mental state examination in order to define inclusion criteria to individuals of sample. Next, a questionnaire was applied, with pre-coded questions on the masticatory capacity and an efficiency test, through the grinding test, where patients received 5 almonds to be grinded and not swallowed. The fragments were poured in granulometric sieves (2mm, 4mm and 4,75mm) to analyze the food fragmentation under tap water. Participants were divided into 3 groups: G1 (n=13) – superior and inferior total prosthesis user, or total or partial edentulous; G2 (n=4) – Total prosthesis user and/or partial removal prosthesis user (PRP) or partial dentition; and G3 (n=14) – complete or partial dentition or PRP user.Results: Efficiency test results showed the G1 patients presented good efficiency and 8 were considered poor; G2 patients were all classified as poor, and G3 patients were 9 poor, 2 regular and 3 good. Regarding to the questionnaires, most patients from the 3 groups felt impossibility to masticate some food, and need special preparation to chew. On take more time to masticate when compared to other people, all patients from G2 answered affirmatively, while only 46.1% G1 and 50% G3 gave the same answer.Just 15.4% G1 and 28.6% G2 are not satisfied with the tame they take.About avoid in front of other people, most patients from G2 and G3 use to, however, 69.2% G1 answered negatively. Regarding to the masticatory capacity self-evaluation, they answered regular.Conclusions: Masticatory efficiency of people using removable prosthesis did not achieve the ideal of a complete dentition. However, it is still better than in individuals with partial dentition or not rehabilitated.

scholarly journals Concepts of Arrangement of Artifical Teeth, Selective Grinding and Balanced Occlusion in Complete Denture Prosthodontics

2012 ◽  
Vol 02 (01) ◽  
pp. 54-60
Author(s):  
Krishna Prasad D. ◽  
B. Rajendra Prasad ◽  
Anupama Prasad D. ◽  
Lobo Nikhil Jason
Keyword(s):  
Functional Activity ◽  
Normal Function ◽  
The State ◽  
Complete Denture ◽  
The Other ◽  
Edentulous Patient ◽  
Tooth Position ◽  
Masticatory System ◽  
Artificial Teeth ◽  
Artificial Tooth

AbstractProsthodontic rehabilitation aims at restoring the patient to a state of normal function, health and optimum esthetics.Numerous factors come together during various phases of complete denture construction. One such factor, the position of artificial teeth, is dependent to a large extent on the state, morphology and position of the denture area existing in the patient's mouth.Artificial teeth must be placed in a position which will be esthetically acceptable to the patient and the clinician, functionally sound and in harmony with the other structures of the masticatory system.Factors governing artificial tooth position include maxillo-mandibular relationships, changes in the residual ridge, dislodging forces, presence of para-functional activity and the esthetic requirements of the patient.While the importance of occlusion in ensuring success of dental therapy cannot be undersated, that seems to be the only point of agreement between authors on this topic. Over the years numerous concepts of occlusion have been proposed which may be indicated and contraindicated based on their benefits and limitations in restoring an edentulous patient. This article explores concepts related to occlusion and esthetics in provision of a complete denture prosthesis.

scholarly journals THE IMPORTANCE OF ORAL FUNCTIONAL CHARACTERISTICS IN TREATMENT OF COMPLETELY EDENTULOUS PATIENT

2015 ◽  
Vol 61 (1) ◽  
pp. 55-58
Author(s):  
Elena Preoteasa ◽  
◽  
Catalina Murariu Magureanu ◽  
Cristina Teodora Preoteasa ◽  
Alexandra Oncescu Moraru ◽  
...  
Keyword(s):  
Quality Of Life ◽  
Treatment Outcome ◽  
Edentulous Patient ◽  
Functional Characteristics ◽  
Removable Prosthesis

In complete edentulism treatment the most challenging objective is restoring patient’s functionality, ensuring proper conditions for chewing, but also speaking and social interacting. In particular, mastication is a central parameter perceived by the patient as one of the most important function to ensure a good quality of life. The aim of this manuscript was to highlight some important factors related to oral functioning that should be considered when planning and implementing the treatment for complete edentulism with conventional or implant-based removable prosthesis, as being regarded as having a great impact on the treatment outcome.

scholarly journals Treatment Outcome with Implant-supported Mandibular Overdenture opposing Natural Dentition

2017 ◽  
Vol 1 (1) ◽  
pp. 45-48
Author(s):  
Sushil Kar ◽  
Arvind Tripathi
Keyword(s):  
Treatment Outcome ◽  
Treatment Option ◽  
Standard Treatment ◽  
Complete Denture ◽  
Fabrication Procedure ◽  
Removable Prosthesis ◽  
Edentulous Patients ◽  
Natural Dentition ◽  
Mandibular Overdenture

ABSTRACT Although the conventional complete denture has been a standard treatment option for edentulous patients, it may not thoroughly fulfill the esthetic or functional needs of many denture wearers. This situation is commonly encountered, especially in relation to the mandibular ridge. Over the last decade, implant-supported overdenture has emerged as a successful alternative to the more commonly used removable prosthesis. The article discusses the fabrication procedure of an implant-assisted overdenture. How to cite this article Kar S, Tripathi A. Treatment Outcome with Implant-supported Mandibular Overdenture opposing Natural Dentition. Int J Clin Dent Res 2017;1(1):45-48.

scholarly journals Fixed Partial Dentures vs Implants in Replacement of Single Missing Tooth in University Hospital Setting - A Retrospective Study

2020 ◽  
Vol 11 (SPL3) ◽  
pp. 225-229
Author(s):  
Ashwin Shravan Kumar M ◽  
Revathi Duraisamy
Keyword(s):  
Hospital Setting ◽  
Normal Function ◽  
University Hospital ◽  
Treatment Needs ◽  
Posterior Teeth ◽  
Anterior Teeth ◽  
Choice Of Treatment ◽  
Retrospective Data Collection ◽  
And Gender ◽  
Missing Tooth

The goal of prosthetic treatment is to restore the normal function, contour and comfort of the teeth. In replacement of anteriors enormous effort is required to bring up aesthetics whereas in posterior teeth replacement effort to replace the function should not be compromised. This study aims to evaluate the preference of FPD and implants in replacement of single lower anterior teeth. A retrospective data collection was done by collecting and reviewing 86000 case sheets of the outpatients department. The study period was about 10 months. Inclusion criteria & exclusion criteria were available. Parameters were tabulated and analysed using SPSS software. There were totally 667 patients treated for replacement of a single missing tooth in the study period. Among these 346 were males and 321 were females.90% of both the population irrespective of age and gender had been preferring fixed partial dentures in replacement of single missing tooth. This study is in consensus with existing literature that fixed partial dentures are widely used for the replacement of single teeth. However, though not statistically significant,10-20% of our study group still preferred to be treated with conventional fixed partial denture treatment. Whether systemic health issues or socioeconomic reasons played a role in the choice of treatment needs to be further evaluated with larger sample size and multicentre studies among our population.

scholarly journals Patterns of partial edentulism based on Kennedy’s classification among patients reporting to Nepal Medical College and Teaching Hospital

2018 ◽  
Vol 7 (4) ◽  
pp. 153-157
Author(s):  
Samskar Bickram Rana ◽  
Binod Acharya ◽  
Amar Bhochhibhoya ◽  
Rinu Sharma ◽  
Jemish Acharya ◽  
...  
Keyword(s):  
Tooth Loss ◽  
Cross Sectional Study ◽  
Normal Function ◽  
Class Iii ◽  
Oral Medicine ◽  
Cross Sectional ◽  
Mandibular Arch ◽  
Medical College ◽  
Edentulous Patients ◽  
Missing Tooth

Background: Edentulism is a sequel of tooth loss which leads to impairment of normal function, comfort, aesthetics and speech. It also leads to various undesirable consequences like occlusal discrepancies, migration and spacing of surrounding teeth, supra eruption, loss of space, temporomandibular disorders and other unwanted changes. Little is known about the prevalence of patterns of edentulism in Nepal. Objectives: To assess the prevalence of Kennedy’s classification on partially edentulous patients. Methodology: A prospective cross-sectional study was carried out among 300 patients within the age of 18-80 years visiting the Department of Oral Medicine and Radiology, College of Dental Science and Hospital -Nepal Medical College  with at least one missing tooth from Jan 2018-March 2018. Results: Out of 300 patients enrolled, a majority were female (178; 59.3%). The patients mostly affected by partially edentulous condition were among the age group of 51 to 60 years (78; 26%). The distribution of partially edentulous areas were similar in maxillary (80; 26%) and mandibular (85; 28.3%) arches and 45% of the patients (n=135) had one or more missing tooth/teeth on both arches. Kennedy’s class III was found in more than 31% of the patients (n=94) in the maxillary arch and 30% (n=91) in the mandibular arch. Likewise, Kennedy’s class III with modification 1 was seen in 21% (n=62) cases in the maxillary and 24% (n=72) cases in the mandibular arch. Conclusion: Kennedy’s class III and Kennedy’s class III with modification 1 were the most common type of pattern of partially edentulous area on both arches.

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