Investigation of Clinical Wear and Surface Roughness of Partial Restorations Fabricated Using Additive and Subtractive Manufacturing Methods: A Split-Mouth Randomized Controlled Clinical Trial
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 发起方
- 入组人数
- 30
- 试验地点
- 1
- 主要终点
- Wear
研究概览
简要总结
The aim of this study is to compare the surface roughness and wear values of crowns fabricated using currently utilized 3D printing and CAD-CAM technologies.
In recent years, crown restorations produced with CAD-CAM systems have been safely used in dentistry. These types of restorative materials are expected not to undergo significant wear themselves and also not to cause wear on natural teeth. Therefore, the structural resistance and hardness of the material are clinically very important. Restorations produced using 3D printing are among the latest technological developments in dentistry.
Additive manufacturing has been defined by the American Society for Testing and Materials (ASTM) as "the process of joining materials layer upon layer to make objects from 3D model data, as opposed to subtractive manufacturing methodologies."
3D printers have started to be used in various disciplines of dentistry such as dental education, oral surgery, dental implantology, orthodontics, pedodontics, prosthodontics, and restorative dentistry. In restorative clinics, they can especially be used in intracoronal restorations. However, studies in this area are quite limited.
The objective of this study is to evaluate the wear values using a Geomagic 3X device and the surface roughness values using a profilometer device over a 12-month period on single crown restorations applied to permanent first molars fabricated by CAD-CAM and 3D printing techniques.
A total of 26 single crown restorations will be performed on first molars. Participants will be selected among individuals aged 18-50 who apply to the Department of Restorative Dentistry, Faculty of Dentistry, Çukurova University. Eligible individuals must be systemically healthy, have no periodontal attachment loss, have an indication for crown restoration, and have a natural opposing tooth in contact with the restored tooth.
详细描述
In today's dentistry, where aesthetics has gained increasing importance, the use of CAD-CAM in the fabrication of fixed prostheses has become widespread.
Although restorations produced by traditional methods are of high quality, they are mechanically and aesthetically affected due to being shaped manually by the dentist (conventional method). Therefore, errors that may occur during fabrication can negatively affect the durability and marginal adaptation of composite restorations.
In a study comparing production techniques, composite crowns produced by the direct technique and single crown restorations fabricated using CAD-CAM were examined under an electron microscope. The composite restorations manufactured with the indirect technique showed more porosity, while no porosity was observed in restorations produced with the CAD-CAM method.
This result may be attributed to the fact that the prefabricated CAD-CAM blocks are homogeneous and subjected to quality control during production. As a result, internal structural defects are generally not observed in milled products. The absence of porosity is an important factor in the durability and fit of restorations.
3D Printers Restorations produced using 3D printers are among the latest technological advancements in dentistry. Additive manufacturing has been defined by the American Society for Testing and Materials (ASTM) as "the process of joining materials layer upon layer to create objects from 3D model data, as opposed to subtractive manufacturing methodologies." 3D printers have begun to be used in various dental disciplines such as dental education, oral surgery, dental implantology, orthodontics, pedodontics, prosthodontics, and restorative dentistry. In restorative clinics, they can especially be utilized for intracoronal restorations. However, studies in this area remain quite limited.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Double (Participant, Investigator)
盲法说明
The aim of the study is to evaluate the wear values and surface roughness of single crown restorations performed on permanent molar teeth produced by CAD-CAM and 3D printing methods over a 12-month period using the Geomagic 3X device for wear measurement and a profilometer for roughness assessment.
Participants will be systemically healthy individuals aged 18 to 50 years, with no periodontal support loss, indicated for crown restoration, and having natural antagonist teeth, who apply to the Department of Restorative Dentistry Clinic at Çukurova University Faculty of Dentistry.
A total of 15 single crown restorations will be performed on first molar teeth.
入排标准
- 年龄范围
- 15 Years 至 70 Years（Child, Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Teeth with Devital and Vital Cusp Loss
排除标准
- •Root Canal Treated Teeth with Lesions
- •Symptomatic Vital Teeth
研究组 & 干预措施
CAD-CAM Group
Participants will receive single crown restorations manufactured by subtractive manufacturing (CAD-CAM milling) techniques.
干预措施: CAD-CAM Manufactured Crowns (Device)
3D Printing Group
Participants will receive single crown restorations manufactured by additive manufacturing (3D printing) techniques.
干预措施: 3D Printed Crowns (Device)
结局指标
主要结局
Wear
时间窗: 12 months
Measuring wear value using the Geomagic 3X device
Surface roughness
时间窗: 12 months
Measuring surface roughness values using a profilometer device
次要结局
未报告次要终点
研究者
Husna Selinay
Research Assistant Dentist
Cukurova University