Appropriate fabrication method for pressure‐formed mouthguards using polyolefin sheets
Appropriate fabrication method for pressure‐formed mouthguards using polyolefin sheets
复制标题
使用聚烯烃片材压力成型护齿套的适当制造方法
DOI：
10.1111/edt.12721
复制
发表时间：
2022
影响因子：
2.5
通讯作者：
Koide Kaoru
中科院分区：
文献类型：
--
作者：
Watarai Yuko;Mizuhashi Fumi;Koide Kaoru
背景/目的聚烯烃片材护齿通常以与乙烯-醋酸乙烯酯片材护齿相同的方式形成。然而，尚未确定用于压力成型工艺的聚烯烃片材的加热条件。本研究的目的是检查适当的加热条件下，聚烯烃片护齿时，制造与压力形成technique.Materials and MethodsMouthguard片的3.0毫米聚烯烃压力形成的工作模型在三个加热温度：90°C，105°C，和120°C。在中切牙唇侧、第一磨牙颊侧和咬合面测量护齿套的厚度。通过测量护齿与工作模型颈缘之间的距离，检查护齿在中门牙和第一磨牙处的配合情况。根据加热条件和测量区域的厚度和适合的护齿的差异进行了分析，使用双向方差分析.ResultsMouthguard厚度不同的测量区域的中切牙和第一磨牙（p< .01）。加热温度为90°C时，中切牙唇面厚度最大（p<0.01）。在第一磨牙颊面加热温度为105°C（p< .01）和第一磨牙咬合面加热温度为105°C或120°C（p< .01）的护齿套中发现最大厚度。在中切牙和第一磨牙处的三种加热条件之间的适合性没有显著差异。ConclusionsThe appropriate heating condition for pressure-formed mouthguards using polyolefin sheets is 90°C to maintain the mouthguard thickness at the anterior teeth area with proper fit.
Background/AimPolyolefin sheet mouthguards are usually formed in the same manner as ethylene‐vinyl acetate sheet mouthguards. However, the heating condition of the polyolefin sheet for the pressure‐forming process has not been determined. The aim of this study was to examine the appropriate heating condition for polyolefin sheet mouthguards when fabricated with the pressure‐formed technique.Materials and MethodsMouthguard sheets of 3.0 mm polyolefin were pressure formed on working models at three heating temperatures: 90°C, 105°C, and 120°C. The thickness of the mouthguard was measured at the labial surface of the central incisor, and the buccal and occlusal surfaces of the first molar. The fit of the mouthguard was examined at the central incisor and the first molar by measuring the distance between the mouthguard and the cervical margin of the working model. Differences in the thickness and fit of the mouthguards according to the heating conditions and the measured regions were analyzed using two‐way analysis of variance.ResultsMouthguard thickness varied among the measured regions of the central incisors and first molars (p< .01). The greatest thickness was found at the labial surface of the central incisor in mouthguards fabricated with the heating temperature of 90°C (p< .01). The greatest thickness was found in mouthguards fabricated with the heating temperature of 105°C at the buccal surface of the first molar (p< .01), and 105°C or 120°C at the occlusal surface of the first molar (p< .01). The fit was not significantly different among the three heating conditions both at the central incisor and the first molar.ConclusionsThe appropriate heating condition for pressure‐formed mouthguards using polyolefin sheets was 90°C to maintain the mouthguard thickness at the anterior teeth area with proper fit.