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The landscape of orthodontics is changing, and the transition to digital workflows in clinical practice has begun. As new and updated scanner models are regularly being released, it is paramount to assess the current evidence base and compare this to manufacturer claims. At present, there are limited literature reviews assessing and summarizing the clinically relevant features of dental scanners. This review summarizes key findings with respect to accuracy, patient-related outcomes and clinician experiences with digital dental scanners.
CPD/Clinical Relevance: Digital scanners are an increasingly popular device in orthodontics, this article provides an up-to-date summary of the pros and cons of scanners in relation to both the patient and orthodontic clinician.
Article
Both intra-oral scanners and extra-oral laboratory scanners are gradually replacing conventional methods of diagnosis and treatment planning (Figure 1). Digital scanning has several advantages over its analogue counterparts, including reduced need for physical storage of casts, transferable data for communication with patients and other dental professionals, and the ability to visualize three-dimensional (3D) models almost instantly. However, they are not without drawbacks, some of which include expensive set-up and maintenance costs, and a significant learning curve for all those involved in adopting the technology.
Alginate impressions taken for the construction of plaster casts are the most common method used in clinical practice, aiding in orthodontic treatment planning. These are currently still accepted as the gold standard,1 but these come with significant disadvantages such as model damage, transport and pouring inaccuracies, as well as time taken to fabricate models and the subsequent need for storage. As of May 2023, the NHS Records Management Code of Practice recommends that clinical dental records be kept for at least 11 years.2 With recent developments and reductions in costs of dental scanners, there has been an increase in popularity of virtual models. However, for a patient's occlusion to be correctly assessed, and for teeth to be moved predictably and effectively, it is imperative that the models we use are accurate.
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