Microbial Colonisation On Vacuum-Formed Retainers With Different Surface Roughness As Constructed On Conventional Models And Three Dimensional (3D) Reconstructed Models
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 36
- 试验地点
- 1
- 主要终点
- Microbial Colonisation On Vacuum-Formed Retainers
研究概览
简要总结
Vacuum-formed retainers are clear or transparent retainers, that hold the teeth in the new position after active orthodontic treatment. These custom made appliances are becoming popular these days due to the aesthetics value among patients.
Vacuum-formed retainers can be made through a process that softens the clear plastic and vacuumed to follow the shape of the dental model before it cools off and hardens again. These dental models can be made from conventional method or through a 3D reconstruction process. Recently, it was found that there is no difference in terms of stability of the teeth and oral health related quality of life of the patients wearing vacuum-formed retainers constructed on either types of models.
Physically, the surface roughness of the retainers appear different because the conventional models and 3D printed models are constructed in a different manner.
Our interest is to determine whether the difference in surface roughness would affect microbial colonisation which can eventually affect the oral health.
So this study aims to find the association between microbial colonisation and surface roughness of vacuum-formed retainers constructed on conventional models and also 3D reconstructed models.
详细描述
RATIONALE OF STUDY
The vacuum-formed retainers are widely preferred today but there is limited research on the effects of the retainers on microbial colonisation, which can have an impact on the oral health. There is possibility that a rough surface finishing of the vacuum-formed retainers may lead to increased microbial colonisation. Therefore, there is a need for us to investigate if the vacuum formed retainers made on 3D reconstructed models may produce increased surface roughness which then can lead to increased microbial colonisation and later impacts the oral health.
Primary Objective :
- To determine the association between different surface roughness of vacuum- formed retainers and microbial colonisation.
Secondary Objectives :
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Screening
- 盲法
- Single (Investigator)
盲法说明
Investigator will be masked with the randomization sequance & allocation.
入排标准
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •i. Fixed appliance on upper and lower arches ii. About to debond iii. Planned for vacuum-formed retainers for retention iv. Non smoking patients v. No systemic disease
排除标准
- •i. Undergoing sectional fixed appliance / single arch treatment ii. Indicated for double retention regime with bonded retainers iii. Patient with smoking habit iv. Any systemic disease that may affect the salivary flow v. History of use of antimicrobial mouthwash less than 1 month prior to debond
研究组 & 干预措施
Vacuum-Formed Retainers From SLA
Vacuum-formed retainers constructed on 3D reconstructed models using stereolitography (SLA) technique.
干预措施: VFR from SLA (Device)
Vacuum-Formed Retainers From FDM
Vacuum-formed retainers constructed on 3D reconstructed models using fused deposition modeling technique (FDM).
干预措施: VFR from FDM (Device)
Conventional Vacuum-Formed Retainers
Vacuum-formed retainers constructed on conventional stone models.
干预措施: Conventional VFR (Device)
结局指标
主要结局
Microbial Colonisation On Vacuum-Formed Retainers
时间窗: 6 months
Microbial colony count on the vacuum-formed retainers constructed on conventional models \& 3D reconstructed models. The vacuum-formed retainers that are collected from the patients will be placed in BHI media and then undergo the process of sonication, which will produce the bacteria suspension. This bacteria suspension will then be cultured in an agar plate with BHI media and incubated for 18 - 24 hours. The total colony per count will then be counted and recorded.
次要结局
- Surface Roughness Of Vacuum-Formed Retainers(6 months)
研究者
Dr Wan Nurazreena Wan Hassan
Associate Professor, Department Of Paediatric Dentistry & Orthodontics, Faculty Of Dentistry
University of Malaya