Simultaneous wireless assessment of intra-oral pH and temperature

Farella, Mauro; Loke, C.; Sander, Sylvia G.; Songini, A.; Allen, Max; Li, Mei; Cannon, Richard D.

doi:10.1016/j.jdent.2016.05.012

Cited by 16 publications

(17 citation statements)

References 26 publications

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“…This pattern was in agreement with previous studies. 23 , 26 , 30 Although the intraoral temperature showed no prominent circadian-like daily rhythm, a significant difference was found between morning to evening and night-time periods, no differences were found between the morning and afternoon time periods ( P =0.78). These results were in contrast to our own previous pilot study, which showed no significant differences in intraoral temperature over a 24-h day.…”

Section: Discussionmentioning

confidence: 89%

“…Some research groups have developed intraoral appliances to track pH continuously from a few minutes to 24 h. 17–20 , 26 , 30 However, these studies had a limited number of participants and it was difficult to draw any conclusions on the link between intraoral pH and circadian rhythms. 26 , 30 Watanabe et al 19 used a wireless telemetry device to track intraoral pH and concluded that pH values rose gradually until 1500 h, where a plateau was reached. Our study also observed a gradual increase in pH until 1500-1600 h but instead of a plateau, the pH gradually decreased over time, from 1500-1600 h and during sleep.…”

Section: Discussionmentioning

confidence: 99%

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Diurnal variation of intraoral pH and temperature

2017

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Objective/Aims:The aim of this study was to measure continuously the intraoral pH and temperature of healthy individuals to investigate their diurnal variations.Materials and Methods:Seventeen participants (mean age, 31±9 years) wore a custom-made intraoral appliance fitted with a pH probe and thermocouple for two sets of 24 h, while carrying out normal daily activities including sleep. The continuous changes in intraoral pH and temperature were captured using a sensor placed on the palatal aspect of the upper central incisors. The collected data were categorised into different status (awake and sleep) and periods (morning, afternoon, evening and night). Both quantitative and qualitative analyses were conducted.Results:The intraoral pH change was found to show a distinctive daily rhythm, showing a 12-h interval between maximum (7.73) and minimum (6.6) pH values. The maximum and minimum values were found to repeat after 24 h. The mean pH over 48 h (two sets of 24 h) was found to be 7.27 (±0.74). There was significant difference found in pH when subjects were awake and asleep and different periods during the day (P<0.001). The mean intraoral temperature was 33.99 °C (±4.9), with less distinctive daily rhythm compared with pH. There was a significant difference found in temperature depending on the time of the day, except between morning and afternoon (P=0.78).Conclusion:Our results showed that there is a distinctive daily, circadian-like pattern in intraoral pH variation over a 24-h period, which has been considered as one of the risk factors in sleep-related dental diseases.

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Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Diurnal variation of intraoral pH and temperature

2017

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“…In Ref. [38], oral pH is measured to control the pathogenesis of dental caries. The device presented in Ref.…”

Section: Phmentioning

confidence: 99%

Recent Advances on Implantable Wireless Sensor Networks

Dinis¹,

Mendes²

2017

Wireless Sensor Networks - Insights and Innovations

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Implantable electronic devices are undergoing a miniaturization age, becoming more efficient and yet more powerful as well. Biomedical sensors are used to monitor a multitude of physiological parameters, such as glucose levels, blood pressure and neural activity. A group of sensors working together in the human body is the main component of a body area network, which is a wireless sensor network applied to the human body. In this chapter, applications of wireless biomedical sensors are presented, along with state-of-the-art communication and powering mechanisms of these devices. Furthermore, recent integration methods that allow the sensors to become smaller and more suitable for implantation are summarized. For individual sensors to become a body area network (BAN), they must form a network and work together. Issues that must be addressed when developing these networks are detailed and, finally, mobility methods for implanted sensors are presented.

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“…Dental erosion is defined as the irreversible loss of mineralized tissue that is caused by acidic agents not involving bacteria [1]. Tooth wear that is induced by erosion has multifactorial etiological factors whose prevalence has increased in recent years and affects almost one-third of the general population [2], resulting in more cases of dental erosion and cervical dentine hypersensitivity [3]. The progression of dental erosion can lead to complications, such as fractures, tooth decay, aesthetics issues (yellow and stained teeth), and eventually tooth loss.…”

Section: Introductionmentioning

confidence: 99%

“…Current treatment modalities are based on multifactorial approaches and may include nutritional education, psychological care, fluoride application, laser irradiation, remineralizing solutions, and even tooth restoration [4,5]. Despite the options that are available to treat dental erosion, some studies have focused on preventive strategies in order to avoid demineralization and caries, such as the development of wireless biosensors that are able to monitor analytical parameters that are involved in the pathogenesis of tooth erosion (e.g., intra-oral pH) [2,6].…”

Section: Introductionmentioning

confidence: 99%

Using Optical Attenuation Coefficient to Monitor the Efficacy of Fluoride and Nd:YAG Laser to Control Dentine Erosion

et al. 2019

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The present study evaluated the protective effects that are induced by fluoride and Nd:YAG laser irradiation to control dentine erosion. One hundred and twenty bovine dentine slabs were eroded with citric acid twice a day for a total period of 15 days. At day 10, the samples were randomly assigned into eight groups: C (Control); F (Fluoride); L1 (Nd:YAG laser, 1 W, 100 mJ, 79.5 J·cm−2); L2 (Nd:YAG laser, 0.7 W, 70 mJ, 55.7 J·cm−2); L3 (Nd:YAG laser, 0.5 W, 50 mJ, 39.7 J·cm−2); F + L1; F + L2; and, F + L3. Optical Coherence Tomography images were collected from the surface of the samples in order to monitor the alterations that were induced by erosion and the effectiveness of each treatment using the Optical Attenuation Coefficient (OAC). OAC values that were calculated for samples from groups C, F, L1, L3, FL1, and FL3 indicated no protective effects against the progression of erosive lesions. Samples from L2 and FL2 groups presented OAC values, indicating that laser irradiation under this condition did not induce the formation of craters on dentine tissue and promoted sufficient chemical and morphological changes to avoid the progression of dentine erosion.

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Simultaneous wireless assessment of intra-oral pH and temperature

Cited by 16 publications

References 26 publications

Diurnal variation of intraoral pH and temperature

Diurnal variation of intraoral pH and temperature

Recent Advances on Implantable Wireless Sensor Networks

Using Optical Attenuation Coefficient to Monitor the Efficacy of Fluoride and Nd:YAG Laser to Control Dentine Erosion

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