Interarch comparison of intraoral pH and temperature: a pilot study,BDJ Open

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Interarch comparison of intraoral pH and temperature: a pilot study
BDJ Open ( IF 2.5 ) Pub Date : 2016-11-25 , DOI: 10.1038/bdjopen.2016.8
Jung Eun Choi ₁ , Karl M Lyons ₁ , Mitten Cb McLean ₁ , Neil J Waddell ₁

Affiliation

Purpose of study:

The severity of tooth wear is known to have an association with intraoral pH and temperature depending on the site.

Objective:

To compare the intraoral pH and temperature between the maxillary and mandibular arch.

Methods:

Fourteen participants (mean age=25.8 years) wore a custom-made intraoral appliance fitted with a pH probe and thermocouple for 24 h while carrying out normal activities including sleep. All participants wore a maxillary appliance; four participants repeated the process and wore the mandibular appliance. Measurements were taken from the palatal aspect of the upper central incisors and lingual aspect of the lower canines. Both qualitative and quantitative statistical analyses were conducted.

Results:

The mean intraoral pH from the maxilla was 7.32 (±0.52) and 7.07 (±0.26) for the mandible. During daytime, there was no statistical significance difference between the two arches (P=0.12). During sleep, there was a significant difference (P<0.001) between the mean pH of the maxilla, 7.0 (±0.46), and mandible, 6.46 (±0.31). The fluctuation patterns of pH and temperature from both arches were similar, but the maxilla showed more variations. The mean temperature from the mandible was slightly higher (36.18 °C (±0.96)) than the maxilla, 33.12 °C (±5.51) during daytime; however, there was no statistically significance difference in temperature between the arches during daytime (awake) or sleep (P=0.27).

Conclusion:

The results showed that there is significant difference in mean intraoral pH between the maxilla and the mandible during sleep, but not during the day and this difference may be associated variations in tooth wear between the arches.

中文翻译：

口内 pH 值和温度的 Interarch 比较：一项初步研究

学习目的：

已知牙齿磨损的严重程度与口腔内 pH 值和温度有关，具体取决于部位。

客观的：

比较上颌弓和下颌弓的口内pH和温度。

方法：

14 名参与者（平均年龄 = 25.8 岁）在进行包括睡眠在内的正常活动时，佩戴装有 pH 探头和热电偶的定制口内矫治器 24 小时。所有参与者都佩戴上颌矫治器；四名参与者重复该过程并佩戴下颌矫治器。从上中切牙的腭侧和下犬牙的舌侧进行测量。进行了定性和定量统计分析。

结果：

上颌骨的平均口内 pH 值为 7.32 (±0.52) 和下颌骨的 7.07 (±0.26)。白天，两弓之间差异无统计学意义（P =0.12）。在睡眠期间，上颌骨的平均 pH 值 7.0 (±0.46) 和下颌骨的平均 pH 值 6.46 (±0.31) 之间存在显着差异 ( P <0.001)。两个拱门的pH和温度波动模式相似，但上颌骨表现出更多的变化。下颌骨的平均温度（36.18 °C（±0.96））略高于上颌骨，白天为 33.12 °C（±5.51）；然而，在白天（清醒）或睡眠期间（P = 0.27），拱门之间的温度没有统计学意义的差异。