Aim: The aim of this study is to identify and review the literature on effect of perinatal and early infancy factors on the eruption chronology of the first deciduous tooth. Materials and methods: A PubMed database literature survey regarding the influence of maternal, perinatal and early infancy period factors on eruption timing of the first primary tooth covering the period from January 1964 to 2020 was conducted. Results: Maternal factors such as smoke exposure during pregnancy, gestational age or even Vitamin D levels could possibly affect the eruption timing. Strong association was evident between some perinatal factors like infant’s birth weight or ethnicity and primary teeth eruption chronology, as opposed to infant’s birth length or sex. Many studies indicated that prematurity could lead to delayed eruption timing, while other studies do not confirm that allegation. Additionally, weight gain during early infancy period seems to have a great effect on eruption timing, whereas feeding method’s impact is not clarified yet. Conclusion: Eruption timing of the first primary tooth is not influenced by only one specific factor. Several conditions may act together and increase the risk of delayed or accelerated teeth eruption, occurring additively or even synergistically. The association between perinatal and early infancy factors and eruption timing of the first primary tooth needs further controlled studies as well as research in a wider spread of ethnicities.

Introduction: Dentin hypersensitivity is a common and clinically significant issue, that many clinicians come across. There is currently a variety of available treatments. Over the past years, the use of herbal products in the medical and dental field has increased. The aim of this systematic review was to assess if the use of herbal products is more effective than conventional products, which are currently being used, in the management of dentin hypersensitivity. Methods: A systematic electronic search was performed in MEDLINE-PubMed, Scopus, and Web of Science up to December 2022. The quality of studies was assessed using the Risk of Bias tool version 2. Results: A total of 2325 publications were identified, and 10 studies fulfilled all the inclusion criteria. Only randomized controlled trials addressed the management of dentin hypersensitivity using herbal oral products, while fulfilling the inclusion criteria. Conclusion: Within the limitations of this review, it was concluded that herbal products may not provide superior benefits reducing the symptoms of dentin hypersensitivity when compared with conventional products. Future studies, properly designed, are needed to determine the safety and efficacy of herbal products.