The CAD/CAM Method is More Efficient and Stable in Fabricating of Lingual Retainer Compared with the Conventional Method
Journal Title: Biomedical Journal of Scientific & Technical Research (BJSTR) - Year 2019, Vol 18, Issue 3
Abstract
The computer-aided designed and manufactured (CAD/CAM) technology is nowadays wildly used in the oral and dental science that provides a stable and efficient way to treat simple and severe disease. The lingual retainer has not change too much until nowadays with the CAD/CAM technology. In this study, we planned to compare the time-consuming and stability of lingual retainer fabricated between conventional method and CAD/CAM method. The results showed that the time for maxilla (B1= 20.0±2.91) and mandible (B3= 9.7±0.67) with conventional method was four times to fabricate the lingual retainer for the maxilla (B2= 5.3±0.67) and mandible ( B4= 4.5±0.53) with CAD/CAM method respectively. These results indicated that the digital method was more efficient in lingual retainer fabrication than conventional method. And while it was more complicated to manufacture lingual retainer for the maxilla than for the mandible, but the conventional method cost twice times to bend the lingual retainer for the maxilla (B1= 20.0±2.91) of the time to bend the lingual retainer for the mandible (B3= 9.7±0.67), while the difference of time-consuming between fabricating the maxilla and mandible was not more than ten percent. All of these indicated that compared with conventional method, the digital method was more efficient and stable which was not disturbed so much by the morphological or individual difference. And it should be the way to deal with the issue of shortage of orthodontists and orthodontic technicians.The shortage of orthodontists and orthodontic technicians are the worldwide issue [1-3]. There are several reasons for this issue. First, the systematic labor shortage makes the total number of orthodontic and orthodontic technician number limited. In the U.S., it is expected to transform the workplace over the next 15 to 20 years as the gap between baby boomers and entrants of collegeeducated workers widens due to the boomers’ mass retirement [2]. It was estimated that by the year 2020 one out of every two people in the U.S. will be older than 50. Second, the long-term basic knowledge studying, and clinical training make the number of orthodontists and orthodontic technician limited. Third, the geographic distribution of specialist orthodontists and orthodontic providers are regional inequalities. Study result from Japan showed that medical access to specialist orthodontic services might be limited in areas other than urban districts and the regional inequalities of specialist orthodontists are high [3]. The computer-aided designed and manufactured (CAD/CAM) technology is wildly applied in the biomedical science and oral and dental science that provides the stable and efficient way to treat common and severe disease [4-6]. The digital method could offer a stable method not matter for some simple cases or for some severe and complicated cases. For bone tissue regeneration, 3D-printed scaffold exhibited excellent biocompatibility which was suitable for mesenchymal stem cells grow and differentiate and offered the appropriate mechanical property which was like its natural environment [7]. In the orthodontics, the CAD/CAM was used to fabricated not only the labial bracket system, but also lingual orthodontic bracket appliance [4]. In the prosthodontics, CAD/CAM was able to print removable partial denture but also customized CAD/CAM implants for complex craniofacial reconstruction in children [6,8]. Lingual retainer is bonded to the lingual side of upper and lower incisors. The bonded retainers are today a standard of care, especially in the mandible [9]. Renkema et al. found that 97% of all Dutch orthodontists utilize fixed retainers [9]. But the process to bend the lingual retainer is a time consumer, which is usually fabricated by flexible spiral wire. In this study, we planned to compare the time-consuming and stability between conventional method and CAD/CAM method in fabricating lingual retainer.
Authors and Affiliations
Xiaolei Hu, Jingya Ling, Xiaomian Wu
Keywords
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- EP ID EP620618
- DOI 10.26717/BJSTR.2019.18.003157
- Views 176
- Downloads 0
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