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(1) Background: The aim of the study was to evaluate the benefit of combining chlorhexidine with the mechanical treatment of peri-implant mucositis. (2) Methods: Articles from 2016 to 2021 included in the PubMed and Scopus databases were analyzed, following the PICOS criteria and the randomized controlled study model that used chlorhexidine in various forms in the treatment of peri-mucositis. According to the established criteria, a limited number of studies were selected. These studies had as their criteria of evaluation for the effectiveness of chlorhexidine, plaque indices, bleeding indices and depth probing indices. Chlorhexidine has been used after mechanical debridement as a solution, with different concentrations of 0.06%/0.12%/0.2% alone or in a concentration of 0.03%, in combination with 0.05% cetylpyridinium chloride, as well as in the form of a gel with a concentration of 0.2%. (3) Results: The results were assessed to a placebo or other substances, and showed a significant reduction in the indices with a follow-up period ranging from 3 months to 1 year. (4) Conclusions: The association of chlorhexidine with the mechanical treatment of peri-implant mucositis has a role in reducing inflammation, although a complete remission was not obtained in all cases, and the results were not statistically significantly different from the use of other antiseptics.

Congenital absence of the teeth, affecting both physiognomy and mastication, can have a great impact on patients' quality of life. It may appear unilateral or bilateral; frequently, it associates with certain general conditions. Familial hypodontia in clinically healthy patients is rare. Genetic transmission, as a determinant factor in missing teeth, can be autosomal dominant, recessive, or related to the sex chromosomes. In case of congenitally missing permanent teeth, the corresponding deciduous teeth can be still found on the arch at adult age. The aim of this article is to present rare cases of familial non-syndromic unilateral and bilateral hypodontia in Romanian adult siblings, highlighting also a cross gene transmission between aunt and niece and evaluating the treatment options in accordance with patient's age and oral status. It shows that early diagnosis of hypodontia is crucial for the patient's future oral health. The decision to keep the temporary teeth or to extract them is influenced by the presence and status of the deciduous teeth, patient's access to treatment and parent's agreement. Asymptomatic adult patients, in which hypodontia was diagnosed during a routine control, do not usually solicit therapeutic intervention until the deciduous teeth are also lost; still, in situations where complications arise through their loss, the treatment of hypodontia is complex, involving a close collaboration between a team of specialists. The article also includes a detailed review of literature referring to the prevalence of hypodontia among different populations.