scholarly journals Trueness and precision of digital implant impressions by intraoral scanners: a literature review

2021 ◽  
Vol 7 (1) ◽  
Author(s):  
Minoru Sanda ◽  
Keita Miyoshi ◽  
Kazuyoshi Baba
Keyword(s):  
Literature Review ◽  
Direct Measurement ◽  
Research Methodology ◽  
Evaluation Methods ◽  
Missing Teeth ◽  
Main Text ◽  
Surface Data ◽  
Surface Deviation ◽  
Edentulous Jaws

Abstract Background With the development of intraoral scanners, their trueness and precision have been evaluated in various studies. Through these studies, the amount of accuracy that can be expected from intraoral scanners has gradually been disclosed, at the same time, it was difficult to integrate the results of individual studies due to differences in evaluation methods between studies. The purpose of this article was to review the currently available evidence, summarise what is currently known about IOS, analyse the evaluation methods of each study, and list points to note when interpreting the results. Main text Most of the studies were conducted in vitro. The accuracy is evaluated in situations such as single missing teeth, partially edentulous ridges with multiple missing teeth, and fully edentulous jaws. To evaluate the accuracy, direct measurement of distance or angle by coordinate measuring machines and calculation of surface deviation by superimposing surface data were predominantly performed. The influence of parameters such as the number of implants, distance between implants, angle between implants, and experience of the operator was evaluated. Many studies have shown that trueness tends to decrease as the distance between the implants and the scan range increases. It was agreed that the implant angle did not affect either trueness or precision. Regarding other factors, the results varied among studies. Therefore, the effects of these parameters are not clear. Conclusions Heterogeneity in the research methodology was prevalent among the studies considered in this review. Therefore, we cannot make a decisive statement regarding the trueness and precision of digital implant impressions by IOSs. So far, the comparison of the numerical values of error between studies has yet to elucidate any clear answers, despite small methodological differences.

Metodologi Pengeluaran Fatwa di Jawatankuasa Fatwa Negeri Johor

2018 ◽  
Vol 13 (1) ◽  
pp. 70-88
Author(s):  
Mohd Faez Mohd Shah ◽  
Norhidayah Pauzi
Keyword(s):  
Literature Review ◽  
Research Methods ◽  
Research Methodology ◽  
Research Method ◽  
Islamic Law ◽  
Field Research ◽  
The State ◽  
Original Source ◽  
Interview Methods ◽  
The Right

In the discipline of Islamic law research, strong proofing and clear Istinbat method are key pillars in the construction of Islamic law based on the application of the science of usul al-fiqh and maqasid al-shari'ah. However, what happens at the state of Johor’s fatwa institution is the opposite. The fatwa research methods applied by the Fatwa Committee of Johor in resolving current fatwa issues is not based on the right and true discipline of Islamic law research. In fact, current inputs related to fatwa issues are not explicitly stated in the method of determining the law either in the form of reality or scientifically verified. Therefore, this paper will discuss the fatwa procedures undertaken by the Fatwa Committee of Johor based on the methods applied in resolving current issues. The research methodology adopted is library and interview methods. This study shows that fatwa management and production in the state of Johor is placed under the jurisdiction of the Mufti of Johor’s Department. The methods adopted by the Fatwa Committee of Johor covers two methods, namely: internal research methods including literature review through the application of original source and proofs based on syarak. Second: field research method that includes an external review or going to the location of study such as conducting observation, questionnaires and interviews including referrals to specialists of different fields. Maslahah and mafsdah consideration are also implemented by the Fatwa Committee in every fatwa decision based on the standard that meets the interests of maqasid al-shari'ah. Keywords: Metode, fatwa, istinbat, usul al-fiqh, maqasid al-shari’ah ABSTRAK Dalam disiplin penyelidikan hukum Islam, kekuatan pendalilan dan kaedah istinbat yang jelas merupakan tunggak utama dalam pembinaan hukum Islam berasaskan kepada aplikasi ilmu usul al-fiqh dan maqasid al-shari’ah. Namun begitu, apa yang berlaku di institusi fatwa negeri Johor adalah sebaliknya. Kaedah penyelidikan fatwa yang diaplikasi oleh Jawatankuasa Fatwa Negeri Johor dalam menyelesaikan isu fatwa semasa tidak berasaskan kepada disiplin penyelidikan hukum Islam yang tepat dan sebenar. Malahan input-input semasa yang berkaitan dengan isu fatwa juga tidak dinyatakan secara jelas dalam kaedah penentuan hukum sama ada dalam bentuk realiti yang berlaku atau pembuktian secara saintifik. Justeru, kertas kerja ini akan membincangkan prosedur fatwa Jawatankuasa Fatwa Negeri Johor berdasarkan metode-metode yang diaplikasi dalam menyelesaikan isu-isu yang bersifat semasa. Metodologi kajian yang digunakan dalam kajian ini adalah melalui metode perpustakaan dan metode lapangan. Hasil kajian menunjukkan bahawa pengurusan dan pengeluaran fatwa di negeri Johor hanya terletak di bawah bidang kuasa Jabatan Mufti Johor. Metode fatwa yang diamalkan oleh Jawatankuasa Fatwa Negeri Johor merangkumi dua metode iaitu pertama, kaedah penyelidikan dalaman yang merangkumi kajian kepustakaan menerusi pengaplikasian dari sumber asas dan dalil-dalil syarak. Kedua, kaedah penyelidikan lapangan yang meliputi kajian luaran atau turun ke lokasi kajian seperti observasi, soal selidik dan temubual dan rujukan kepada pakar dalam bidang yang berlainan. Pertimbangan maslahah dan mafsdah juga dimplementasikan oleh Jawatankuasa Fatwa dalam setiap keputusan fatwanya berasaskan standard yang menepati kepentingan maqasid al-shari’ah. Kata kunci: Metode, fatwa, istinbat, usul al-fiqh, maqasid al-shari’ah

Factors Affecting the Wear Behavior of Monolithic Zirconia and the Antagonists: Literature Review

2020 ◽  
Vol 2 (1) ◽  
pp. 4-11
Author(s):  
Marcia Borba ◽  
Paula Benetti ◽  
Giordana P. Furini ◽  
Kátia R. Weber ◽  
Tábata M. da Silva
Keyword(s):  
Literature Review ◽  
Glass Ceramic ◽  
Wear Behavior ◽  
Glass Ceramics ◽  
Surface Treatments ◽  
Human Tooth ◽  
Initial Surface ◽  
Monolithic Zirconia ◽  
Feldspathic Porcelain

Background: The use of zirconia-based ceramics to produce monolithic restorations has increased due to improvements in the optical properties of the materials. Traditionally, zirconiabased ceramics were veneered with porcelain or glass-ceramic and were not directly exposed to the oral environment. Therefore, there are several doubts regarding the wear of the monolithic zirconia restoration and their antagonists. Additionally, different surface treatments are recommended to promote a smooth surface, including glaze and several polishing protocols. To support the correct clinical application, it is important to understand the advantages and limitations of each surface treatment. Objective: The aim of this short literature review is to investigate the factors that may affect the wear of monolithic zirconia restorations in service and their antagonists. Methods: Pubmed/Medline database was accessed to review the literature from a 10-year period using the keywords: zirconia, monolithic, prosthesis, wear. Both clinical and in vitro studies were included in the review. Results: Studies investigated the effect of several surface treatments, including grinding with diamond- burs, polishing and glazing, on the surface roughness, phase transformation and wear capacity of monolithic zirconia. The wear behavior of monolithic zirconia was frequently compared to the wear behavior of other ceramics, such as feldspathic porcelain, lithium disilicate-based glassceramic and leucite-reinforced glass-ceramic. Human tooth, ceramics and resin composites were used as antagonist in the investigations. Only short-term clinical studies are available (up to 2 years). Conclusion: Literature findings suggest that zirconia monolithic restorations are wear resistant and unlikely to cause excessive wear to the antagonist, especially when compared to feldspathic porcelain and glass-ceramics. Monolithic zirconia should be polished rather than glazed. Yet, none of the polishing systems studied was able to completely restore the initial surface conditions of zirconia after being adjusted with burs. More clinical evidence of the antagonist tooth wear potential of monolithic zirconia is needed.

scholarly journals Influential Factors and Evaluation Methods of the Performance of Grouted Semi-Flexible Pavement (GSP)—A Review

2021 ◽  
Vol 11 (15) ◽  
pp. 6700
Author(s):  
Xiaogang Guo ◽  
Peiwen Hao
Keyword(s):  
Literature Review ◽  
Systematic Literature Review ◽  
Asphalt Concrete ◽  
Cement Mortar ◽  
Road Construction ◽  
Flexible Pavement ◽  
Evaluation Methods ◽  
Influential Factors ◽  
Future Research ◽  
Relative Evaluation

Grouted Semi-flexible Pavement (GSP) is a novel pavement composed of open-graded asphalt concrete grouted with high-fluidity cement mortar. Due to its excellent load-bearing and anti-rutting performance, it has great potential as anti-rutting overlay and surface in road construction. However, the understanding of GSP performance remains limited and pertinent findings are inconsistent. This article aims to provide a systematic literature review for the articles which were published between 2000 and 2020 on GSP, explore the problems in the recent research, identify knowledge gaps, and deliver recommendations for future research. The influential factors and the relative evaluation methods of GSP performance are summarized and discussed in this article.

scholarly journals Interventions for replacing missing teeth: attachment systems for implant overdentures in edentulous jaws

2018 ◽  
Author(s):  
Alan GT Payne ◽  
Nabeel HM Alsabeeha ◽  
Momen A Atieh ◽  
Marco Esposito ◽  
Sunyoung Ma ◽  
...  
Keyword(s):  
Missing Teeth ◽  
Edentulous Jaws

scholarly journals Intraoral Fluoride-Releasing Devices: A Literature Review

2012 ◽  
Vol 3 (4) ◽  
pp. 350-354 ◽  
Author(s):  
Jagjit Singh ◽  
Gurminder Singh ◽  
Ramandeep Singh Gambhir ◽  
Daljit Kapoor ◽  
Heena Kakar
Keyword(s):  
Dental Caries ◽  
Literature Review ◽  
Fluoride Concentration ◽  
Risk Groups ◽  
High Caries Risk ◽  
Release Devices ◽  
Topical Fluorides

ABSTRACT Dental caries still continues to be a problem for majority of the individuals and it can be a serious problem for medically compromised, developmentally disabled and elderly individuals. Water fluoridation, systemic and topical fluorides are used for past many years to supply supplemental fluoride in order to combat dental caries. The latest fluoride research is investigating the use of slow-release devices for the long-term intraoral provision of fluoride. The present review addresses two main types of intraoral fluoride-releasing devices like the copolymer membrane device, glass device containing fluoride and some variations of these devices. These devices can significantly increase the salivary fluoride concentration without substantially affecting the urinary fluoride levels. A significant number of studies have confirmed that intraoral fluoride-releasing devices have great potential for use in preventing dental caries in children, high-caries-risk groups, and irregular dental attenders in addition to a number of other applications. As most of the studies done on these devices are in vitro and in vivo studies, more well-designed clinical trials are necessary to evaluate the results so that these devices can be used clinically. How to cite this article Gambhir RS, Kapoor D, Singh G, Singh J, Kakar H. Intraoral Fluoride-Releasing Devices: A Literature Review. World J Dent 2012;3(4):350-354.

scholarly journals Penggunaan Ester Asam Fumarat Oral Dalam Pengobatan Kasus Dermatologi

2020 ◽  
Vol 8 (2) ◽  
pp. 50-59
Author(s):  
Elina Rahma ◽  
Dwi Indria Anggraini
Keyword(s):  
Literature Review ◽  
Granuloma Annulare ◽  
Necrobiosis Lipoidica

Pendahulan: Ester asam fumarat oral (FAE) merupakan senyawa yang menarik dalam bidang dermatologi. FAE bekerja pada sel kulit dan jaringan sitokin. Sejauh ini hanya campuran dimethylfumarate (DMF) dan monoethylfumarate (MEF) yang telah mendapatkan persetujuan untuk perawatan oral psoriasis jenis plak sedang hingga parah. Tujuan: Untuk mengetahui penggunaan Ester asam fumarat oral (FAE) dalam tatalaksana di bidang dermatologi Metode: Artikel disusun menggunakan metode literature review, melibatkan 34 literatur bersumber dari buku dan jurnal. Hasil: DMF tampaknya menjadi komponen aktif utama. Penting untuk menekankan perbedaan antara asam fumarat dan ester asam fumarat. Formulasi asam fumarat tersedia sebagai suplemen kesehatan dan sering dipasarkan sebagai obat alternatif alami untuk mengobati psoriasis. Namun buruk diserap oleh usus dan diekskresikan melalui urin tanpa memiliki efek terapi apa pun. Pembahasan: Meskipun mode aksi FAE dan mekanisme kerja dalam terapi psoriasis masih belum jelas, bukti menunjukkan bahwa itu tidak ada hubungannya dengan siklus Krebs dan senyawa aktif utama DMF.Ada bukti bahwa FAE tidak hanya efektif dan aman pada psoriasis tetapi juga penyakit non-infeksi granulomatosa seperti granuloma annulare, necrobiosis lipoidica, dan sarkoidosis. Penelitian in vitro dan hewan menunjukkan beberapa aktivitas dalam melanoma ganas juga. Simpulan: Ester asam fumarat oral (FAE) banyak digunakan dalam beberapa kasus dermatologi   Kata kunci: Asam fumarat, dermatologi, psoriasis, sarkoidosis

scholarly journals Classification of Evaluation Methods for the Effective Assessment of Simulation Games: Results from a Literature Review

2019 ◽  
Vol 9 (1) ◽  
pp. 19 ◽  
Author(s):  
Niluefer Deniz Faizan ◽  
Alexander Löffler ◽  
Robert Heininger ◽  
Matthias Utesch ◽  
Helmut Krcmar
Keyword(s):  
Literature Review ◽  
Current Trend ◽  
Evaluation Methods ◽  
Simulation Game ◽  
Simulation Games ◽  
Research Papers ◽  
Free Environment ◽  
Effective Assessment ◽  
A Current

As a current trend in teaching, simulation games play an active and important role in the area of technology-based education. Simulation games create an envi-ronment for scholars to solve real-world problems in a risk-free environment. Therefore, they aim to increase the knowledge base as well as learning experienc-es for students. However, assessing the effectiveness of a simulation game is necessary to optimize elements of the game and increase their learning effect. In order to achieve this aim, different evaluation methods exist, which do not always involve all phases when running a simulation game. In this study, we conduct a literature review to analyze evaluation methods for three phases of simulation games: pre-game, in-game, and post-game. Thirty-one peer-reviewed research papers met specified selection criteria and we classified them according to a di-dactic framework that illustrates four phases of running simulation games: Prepa-ration, Introduction, Interaction and Conclusion phase. Based on the results, we provide a concrete evaluation strategy that will be a guide to assess simulation games during all phases. This study contributes to theory by providing an over-view of evaluation methods for the assessment of simulation games within the different game phases. It contributes to practice by providing a concrete evalua-tion strategy that can be adapted and used to assess simulation games.

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