CADCAM in dentistry. Materials and methods: an overview for the dental team

Dental Update ◽  
2021 ◽  
Vol 48 (8) ◽  
pp. 671-678
Author(s):  
Simon Fieldhouse
Keyword(s):  
Additive Manufacturing ◽  
Clinical Relevance ◽  
Emerging Technology ◽  
Broad Context ◽  
Perceived Barriers ◽  
Digital Workflow ◽  
Digital Dentistry ◽  
Essential Information ◽  
Manufacturing Methods ◽  
The Uk

CADCAM is still a relatively underused genre in UK dentistry. This article examines, in broad context, the range of technology and materials available in the UK. The nature of a digital workflow is outlined, with examples therein. Subtractive and additive manufacturing is discussed, along with manufacturing methods and materials. The perceived barriers to incorporating CADCAM, the actual benefits of digital dentistry to the dental team, and our patients, along with comments as to the future of digital dentistry in the UK are also discussed. CPD/Clinical Relevance: With the increasing interest in CADCAM in UK dentistry, an overview of emerging technology and materials is essential information for clinicians.

scholarly journals Rapid fabrication of MOF-based mixed matrix membranes through digital light processing

2021 ◽  
Author(s):  
Alexey Pustovarenko ◽  
Beatriz Seoane ◽  
Edy Abou-Hamad ◽  
Helen E King ◽  
Bert Weckhuysen ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
3D Printing ◽  
Processing Speed ◽  
Mixed Matrix Membranes ◽  
Scientific Interest ◽  
Mixed Matrix ◽  
Digital Light Processing ◽  
Additive Manufacturing Technology ◽  
Rapid Fabrication ◽  
Manufacturing Methods

3D printing, also known as additive manufacturing technology, has greatly expanded across multiple sectors of technology replacing classical manufacturing methods by combining processing speed and high precision. The scientific interest...

scholarly journals Digital Workflow to Fabricate Complete Dentures for Edentulous Patients Using a Reversing and Superimposing Technique

2021 ◽  
Vol 11 (13) ◽  
pp. 5786
Author(s):  
Hwa-Jung Lee ◽  
Jeongho Jeon ◽  
Hong Seok Moon ◽  
Kyung Chul Oh
Keyword(s):  
Additive Manufacturing ◽  
Computer Aided Design ◽  
Digital Data ◽  
Complete Dentures ◽  
Intraoral Scanner ◽  
Digital Workflow ◽  
Denture Base ◽  
Scan Data ◽  
Edentulous Patients ◽  
Aided Design

This technical procedure demonstrates a 4-step completely digital workflow for the fabrication of complete dentures in edentulous patients. The digital scan data of the edentulous arches were obtained using an intraoral scanner, followed by the fabrication of modeless trial denture bases using additive manufacturing. Using the trial denture base and a wax rim assembly, the interarch relationship was recorded. This record was digitized using an intraoral scanner and reversed for each maxillary and mandibular section individually. The digital scan data directly obtained using the intraoral scanner were superimposed over the reversed data, establishing a proper interarch relationship. The artificial teeth were arranged virtually and try-in dentures were additively manufactured. Subsequently, the gingival and tooth sections were additively manufactured individually and characterized. Thus, fabrication of digital complete dentures can be accomplished using digital data characteristics. The workflow includes data acquisition using an intraoral scanner, data processing using reverse engineering and computer-aided design software programs, and additive manufacturing.

Milk Alternatives. What Advice should Dental Professionals be Giving?

Dental Update ◽  
2021 ◽  
Vol 48 (5) ◽  
pp. 359-366
Author(s):  
Imran Thalukder ◽  
Halima Torofdar ◽  
Mechelle Collard
Keyword(s):  
Risk Assessment ◽  
Clinical Relevance ◽  
Sugar Content ◽  
Caries Risk ◽  
Regular Consumption ◽  
Increasing Trend ◽  
Form Part ◽  
The Uk ◽  
Drinking Milk ◽  
Dental Professionals

Drinking milk-like fluids made from plant-based materials, such as soya, nuts and peas, is an increasing trend within the population, and regular consumption of these non-dairy alternatives may increase the risk of developing caries. This article focuses on current research relating to caries risk and consumption of milk-like products, and also investigates the sugar content of milk alternatives available in the UK. CPD/Clinical Relevance: Frequent sugar attacks causes caries. Dentists need to be aware of milk and milk alternatives for some may contribute to the development of caries, and this should form part of their caries risk assessment.

Additive Manufacturing: The Next Generation of Scapholunate Ligament Reconstruction

2021 ◽  
Author(s):  
Matthew N. Rush ◽  
Christina Salas ◽  
Lorraine Mottishaw ◽  
Damian Fountain ◽  
Deana Mercer
Keyword(s):  
Additive Manufacturing ◽  
Ligament Reconstruction ◽  
Three Dimensional ◽  
Biological Properties ◽  
Bone Interface ◽  
Significant Strength ◽  
Efficient Integration ◽  
Manufacturing Methods ◽  
Manufacturing Techniques ◽  
Manufacturing Technologies

Abstract Background Ligament reconstruction, as a surgical method used to stabilize joints, requires significant strength and tissue anchoring to restore function. Historically, reconstructive materials have been fraught with problems from an inability to withstand normal physiological loads to difficulties in fabricating the complex organization structure of native tissue at the ligament-to-bone interface. In combination, these factors have prevented the successful realization of nonautograft reconstruction. Methods A review of recent improvements in additive manufacturing techniques and biomaterials highlight possible options for ligament replacement. Description of Technique In combination, three dimensional-printing and electrospinning have begun to provide for nonautograft options that can meet the physiological load and architectures of native tissues; however, a combination of manufacturing methods is needed to allow for bone-ligament enthesis. Hybrid biofabrication of bone-ligament tissue scaffolds, through the simultaneous deposition of disparate materials, offer significant advantages over fused manufacturing methods which lack efficient integration between bone and ligament materials. Results In this review, we discuss the important chemical and biological properties of ligament enthesis and describe recent advancements in additive manufacturing to meet mechanical and biological requirements for a successful bone–ligament–bone interface. Conclusions With continued advancement of additive manufacturing technologies and improved biomaterial properties, tissue engineered bone-ligament scaffolds may soon enter the clinical realm.

scholarly journals 3D Digitization and Additive Manufacturing Technologies in Medicine

2018 ◽  
Vol 26 (42) ◽  
pp. 165-170
Author(s):  
Ivan Molnár ◽  
Ladislav Morovič
Keyword(s):  
Additive Manufacturing ◽  
Manufacturing Processes ◽  
Design And Manufacturing ◽  
Medical Aids ◽  
Manufacturing Methods ◽  
Manufacturing Technologies ◽  
Design And Manufacture ◽  
3D Digitization ◽  
The Given

Abstract The paper discusses the use of 3D digitization and additive manufacturing technologies in the field of medicine. In addition, applications of the use of 3D digitization and additive manufacturing methods are described, focusing on the design and manufacture of individual medical aids. Subsequently, the process of designing and manufacturing of orthopedic aids using these technologies is described and the advantages of introducing the given technologies into the design and manufacturing processes in the medicine sector are presented.

Perceived Barriers to Walking in the Neighborhood Environment: A Survey of Middle-Aged and Older Adults

2007 ◽  
Vol 15 (3) ◽  
pp. 318-335 ◽  
Author(s):  
Jill Dawson ◽  
Melvyn Hillsdon ◽  
Irene Boller ◽  
Charlie Foster
Keyword(s):  
Physical Activity ◽  
Older Adults ◽  
Neighborhood Environment ◽  
Perceived Barriers ◽  
Activity Levels ◽  
Environmental Attributes ◽  
Physical Activity Levels ◽  
Health Related ◽  
Low Levels ◽  
The Uk

The authors investigated whether low levels of walking among older adults in the UK were associated with demographic and health characteristics, as well as perceived environmental attributes. Survey data were obtained from self-administered standard questionnaires given to 680 people age 50+ (mean age 64.4 yr) attending nationally led walking schemes. Items concerned with demographic characteristics and perceived barriers to neighborhood walking were analyzed using multiple logistic regression. Citing more than 1 environmental barrier to walking, versus not, was associated with significantly reduced levels of (leisure) walking (MET/hr) in the preceding week (Z = –2.35, p = .019), but physical activity levels overall did not differ significantly (Z = –0.71, p = .48). Citing a health-related barrier to walking significantly adversely affected overall physical activity levels (Z = –2.72, p = .006). The authors concluded that, among older people who favor walking, health problems might more seriously affect overall physical activity levels than perceived environmental barriers.

1. Introduction to constitutional law

2021 ◽  
pp. 1-8
Author(s):  
Colin Faragher
Keyword(s):  
Constitutional Law ◽  
Central Government ◽  
Essential Information ◽  
Legal Rules ◽  
Parliamentary Sovereignty ◽  
Head Of State ◽  
Form Of Government ◽  
The Government ◽  
Definition Of ◽  
The Uk

Each Concentrate revision guide is packed with essential information, key cases, revision tips, exam Q&As, and more. Concentrates show you what to expect in a law exam, what examiners are looking for, and how to achieve extra marks. This chapter discusses the definition of constitutional law and the characteristics of the British Constitution. Constitutional law looks at a body of legal rules and political arrangements concerning the government of a country. A constitution may take the form of a document or set of documents which declare that a country and its chosen form of government legitimately exists. The British Constitution is largely unwritten, flexible in nature, and based on absolute parliamentary sovereignty. The UK is also a unitary state. There is a central government, as well as devolved legislative and executive bodies in Scotland, Wales, Northern Ireland, and England. It is also a constitutional monarchy. This means that the head of state is a king or queen and that they exercise their powers in and through a parliamentary system of government in which the members of the executive are accountable to a sovereign parliament.

5. Parliamentary government and the legislative process

2021 ◽  
pp. 54-80
Author(s):  
Colin Faragher
Keyword(s):  
Significant Role ◽  
Legislative Process ◽  
Voting Systems ◽  
House Of Commons ◽  
Essential Information ◽  
Parliamentary Government ◽  
House Of Lords ◽  
The Uk ◽  
Electoral Law

Each Concentrate revision guide is packed with essential information, key cases, revision tips, exam Q&As, and more. Concentrates show you what to expect in a law exam, what examiners are looking for, and how to achieve extra marks. This chapter first describes the UK legislature. The legislature of the UK is the Queen in Parliament. Parliament is bicameral, meaning that, apart from the Queen, there are two legislative chambers called the House of Lords and the House of Commons. The House of Lords—composed of life peers, senior bishops, and some hereditary peers—is guardian of the constitution through the work of the House of Lords Constitution Committee and protects the constitution and initiates and revises legislation. The House of Commons—composed of constituency representatives organized on party lines under the whip system—is the principal legislative chamber and plays a significant role in scrutinizing the executive. The discussion then turns to the legislative process, covering electoral law, alternative voting systems, and the devolution of the legislative function including the Wales Act 2017.

7. The monarchy and the Royal Prerogative

2021 ◽  
pp. 94-105
Author(s):  
Colin Faragher
Keyword(s):  
Essential Information ◽  
Head Of State ◽  
The Uk ◽  
Constitutional Monarchy

Each Concentrate revision guide is packed with essential information, key cases, revision tips, exam Q&As, and more. Concentrates show you what to expect in a law exam, what examiners are looking for, and how to achieve extra marks. The UK is a constitutional monarchy: the monarch exercises their legal powers as part of a system of government which is parliamentary and democratic. The chapter discusses the legal source of the monarch’s powers as head of state which is the Royal Prerogative exercised in accordance with binding political rules and practices. The chapter also covers the monarch’s role within the executive. This chapter discusses the special privileges and immunities of the monarch; the powers and duties of the monarch; and the monarch and the organs and functions of government.

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