scholarly journals Nanosized calcium deficient hydroxyapatites for tooth enamel protection

2021 ◽  
Author(s):  
Vita Zalite ◽  
Janis Lungevics ◽  
Jana Vecstaudza ◽  
Liga Stipniece ◽  
Janis Locs
Keyword(s):  
Tooth Enamel

The role of the oral cavity immune cells in the postoperative complications after face lifting

2018 ◽  
pp. 174-178
Author(s):  
Ш.М. Абрамян ◽  
Е.В. Рожнова ◽  
Е.Н. Волкова ◽  
С.Н. Блохин ◽  
С.Г. Морозов
Keyword(s):  
Oral Cavity ◽  
Immune Cells ◽  
Postoperative Period ◽  
Negative Impact ◽  
Tooth Enamel ◽  
Healing Time ◽  
Negative Contribution ◽  
Dental Diseases ◽  
Induced Apoptosis ◽  
Wound Healing Time

Цель. Изучение клеток иммунной системы полости рта у пациентов до проведения операции лифтинга лица, а также сопоставление этих данных с показателями, выявленными при осложнениях в послеоперационном периоде. Методика. Исследованы клетки иммунной системы полости рта 100 женщин (23-68 лет), которым перед операцией лифтинга лица проведено стоматологическое обследование и необходимое лечение при наличии кариеса дентина, клиновидного дефекта эмали зуба, хронического периодонтита или пульпита. Выделенные путем смывов десенной борозды клетки окрашивали моноклональными антителами и анализировали на проточном цитометре. Определяли уровень спонтанного и индуцированного апоптоза. Оценивали уровень фагоцитоза и генерацию супероксидного аниона нейтрофилами. Результаты. Показано, что хронические воспалительные заболевания зубов оказывают негативное влияние на состояние иммунных клеток ротовой полости, сопровождаются повышением генерации супероксидного аниона нейтрофилами, повышением уровня спонтанного и церамид-индуцированного апоптоза клеток десенной борозды. Заключение. Наличие хронической патологии зубов, даже после санации, оказывает негативное влияние на течение послеоперационного периода при проведении операции лифтинга лица, в частности, способствует увеличению времени заживления операционной раны, инфицированию раны с появлением очагов некроза в области операционного шва. The object. The study of the cells of the immune system of the oral cavity in patients before the operation of face lifting, as well as a comparison of these indicators with complications in the postoperative period. Methods. The immune cells from the oral cavity were studied in 100 women (23-68 years), who underwent a dental examination and necessary treatment if they had the dentin caries, wedge-shaped defect of tooth enamel, chronic periodontitis or pulpitis before the facial lifting operation. The immune cells have been isolated by a lavage of gingival sulcus around the damaged tooth. Results. It has been shown that chronic dental diseases made a negative contribution to the oral cavity immune cells. It has been accompanied by the elevated levels of superoxide originating from neutrophils as well as the increased levels of spontaneous and ceramide-induced apoptosis of immune cells isolated from the gingival sulcus. Conclusion. The presence of chronic pathology of teeth even in the case of the preoperative dental sanation has a negative impact on the postoperative period after face lifting, in particular, contributes to the lengthening of the surgical wound healing time, wound infection as well as the partial necrosis of suture.

Importance of Oral Health in Pregnancy: A Mini-symposium

2019 ◽  
Vol 15 (3) ◽  
pp. 156-158
Author(s):  
Aditi Priyamvara ◽  
Amit K. Dey ◽  
Antara Bagchi ◽  
Raveena Kelkar ◽  
Rajaram Sharma
Keyword(s):  
Oral Health ◽  
Oral Cavity ◽  
Tooth Enamel ◽  
Relevant Information ◽  
The Body ◽  
Systemic Impact ◽  
Low Birth Weight Babies ◽  
Adverse Pregnancy ◽  
In Pregnancy

Background: It is known that hormonal imbalances during pregnancy make women more susceptible to dental problems. High levels of progesterone and estrogen during pregnancy, lead to an increased inflammatory response to dental plaque thus causing predisposing to gum diseases such as gingivitis. If untreated, gingivitis leads to chronic periodontitis which may manifest systemically in form of cardiovascular, endocrine or even respiratory disorders. Also, hyperacidity in the oral cavity due to gastric reflux and vomiting leads to decreased pH thus damaging the tooth enamel making the oral cavity more prone to tooth decay and tooth loss. Studies also show that periodontal disease can also lead to adverse pregnancy outcomes such as pre-term and low birth weight babies. Objectives: We sought to understand the role of oral health in pregnancy. Methods: We identified major articles of interest in the field of oral health in pregnancy and drafted a mini-symposium based on relevant information. Conclusion: Regular dental visits and cognizant efforts to sustain a healthy oral environment can help women in the prevention and treatment of dental issues during pregnancy. The paper highlights the common oral manifestations during pregnancy and their local and systemic impact on the body during pregnancy. Furthermore, it also emphasizes the importance of good oral health practices to counteract the oral complications and the significance of oral health awareness in pregnant women.

Wear behavior of dental glass-ceramics: a scoping review on the damage of opposing tooth enamel surfaces

Biotribology ◽  
2020 ◽  
Vol 21 ◽  
pp. 100116 ◽  
Author(s):  
Júlio C.M. Souza ◽  
Cristina S. Silva ◽  
João Caramês ◽  
Bruno Henriques ◽  
Antonio P. Novaes de Oliveira ◽  
...  
Keyword(s):  
Scoping Review ◽  
Tooth Enamel ◽  
Wear Behavior ◽  
Glass Ceramics

scholarly journals Contamination from Possible Solar Light Exposures in ESR Dosimetry Using Human Tooth Enamel.

1998 ◽  
Vol 39 (3) ◽  
pp. 185-191 ◽  
Author(s):  
NORI NAKAMURA ◽  
JANINE F. KATANIC ◽  
CHYUZO MIYAZAWA
Keyword(s):  
Tooth Enamel ◽  
Solar Light ◽  
Human Tooth ◽  
Human Tooth Enamel

DO WEAK OR STRONG ACIDS REMOVE CARBONATE CONTAMINATION FROM ANCIENT TOOTH ENAMEL MORE EFFECTIVELY? THE EFFECT OF ACID PRETREATMENT ON RADIOCARBON AND δ13C ANALYSES

Radiocarbon ◽  
2021 ◽  
pp. 1-18
Author(s):  
Rachel Wood ◽  
Andre Barros Curado Fleury ◽  
Stewart Fallon ◽  
Thi Mai Huong Nguyen ◽  
Anh Tuan Nguyen
Keyword(s):  
Acetic Acid ◽  
Chelating Agents ◽  
Tooth Enamel ◽  
Mineral Phase ◽  
Acid Pretreatment ◽  
Skeletal Material ◽  
Lower Porosity ◽  
Hot Environments ◽  
Strong Acids

ABSTRACT In hot environments, collagen, which is normally targeted when radiocarbon (14C) dating bone, rapidly degrades. With little other skeletal material suitable for 14C dating, it can be impossible to obtain dates directly on skeletal materials. A small amount of carbonate occurs in hydroxyapatite, the mineral phase of bone and tooth enamel, and has been used as an alternative to collagen. Unfortunately, the mineral phase is often heavily contaminated with exogenous carbonate causing 14C dates to underestimate the true age of a sample. Although tooth enamel, with its larger, more stable crystals and lower porosity, is likely to be more robust to diagenesis than bone, little work has been undertaken to investigate how exogenous carbonate can be effectively removed prior to 14C dating. Typically, acid is used to dissolve calcite and etch the surface of the enamel, but it is unclear which acid is most effective. This study repeats and extends earlier work using a wider range of samples and acids and chelating agents (hydrochloric, lactic, acetic and propionic acids, and EDTA). We find that weaker acids remove carbonate contaminants more effectively than stronger acids, and acetic acid is the most effective. However, accurate dates cannot always be obtained.

scholarly journals The control of pain due to dentin hypersensitivity in individuals with molar–incisor hypomineralisation: a protocol for a randomised controlled clinical trial

BMJ Open ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. e044653
Author(s):  
Ana Paula Taboada Sobral ◽  
Elaine Marcilio Santos ◽  
Ana Cecilia Aranha ◽  
Paulo Vinícius Soares ◽  
Caroline Moraes Moriyama ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Tooth Enamel ◽  
Control Group ◽  
Controlled Clinical Trial ◽  
Dentin Hypersensitivity ◽  
Molar Incisor Hypomineralisation ◽  
Randomised Controlled Clinical Trial ◽  
Sensitive Teeth ◽  
Randomised Controlled ◽  
Incisor Hypomineralisation

IntroductionDentin hypersensitivity (DH) is defined as high sensitivity of the vital dentin when exposed to thermal, chemical or tactile stimuli. Two mechanisms are required for the occurrence of DH: (1) the dentin must be exposed and (2) the dentinal tubules must be open and connected to the pulp. Molar–incisor hypomineralisation (MIH) is a qualitative abnormality of a genetic origin that affects tooth enamel and, in most cases, is accompanied by DH. The control of tooth sensitivity is fundamental to the successful treatment of MIH. The aim of the proposed randomised, controlled, clinical trial is to evaluate the effectiveness of different protocols for the control of DH in patients with teeth affected by MIH.Methods and analysisOne hundred and forty patients who meet the inclusion criteria will be allocated to four groups. Group 1 will be the control group (placebo). In Group 2, sensitive teeth will be sealed with PermaSeal (Ultradent). In Group 3, sensitive teeth will receive low-level laser (LLL, AsGaAl) at a wavelength of 780 nm (Laser XT Therapy, DMC, São Carlos, Brazil). In Group 4, sensitive teeth will be treated with both LLL and PermaSeal (Ultradent). DH will be evaluated 15 min after the application of the treatments and the patients will be reevaluated 1 week, 1 month, 3 months and 6 months after the treatments. The primary outcome of this study is change in pain/sensitivity, when evaluated through a Visual Analogue Scale, to determine the effectiveness of the proposed treatments, as well as differences among the evaluation times for each proposed treatment.Ethics and disseminationThis protocol has been ethically approved by the local medical ethical committee (protocol number: 4.020.261). Results will be submitted to international peer-reviewed journals and presented at international conferences.Trial registration numberNCT04407702.

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