The aim of this systematic review was to assess the scientific literature on the accuracy of guided implant surgery and the methods used for its quantification. Two reviewers searched PubMed and the Cochrane Library to identify relevant articles published before 2023. Two methodological quality-assessment tools were used to assess the quality of the studies included. Inter-investigator reliability was verified using kappa statistics. Twenty-three clinical studies out of the 3299 articles initially identified met the inclusion criteria. The “radiographic matching method” and “digital registration method” were used to assess accuracy in guided surgery. The mean angular, coronal, and apical deviations of mucosa-supported guides ranged from 2.7° to 5.14°, 0.87 mm to 2.05 mm, and 1.08 mm to 2.28 mm, respectively. With bone-supported guides, these ranged from 2.49° to 5.08°, 0.71 mm to 1.60, and 0.77 mm to 1.65 mm, respectively. In tooth-supported guides, deviations were from 2.5° to 5.62°, 0.39 mm to 1.63 mm and 0.28 mm, and 1.84 mm, respectively. Regardless of the evaluation method, all systems exhibit some error. The minimum and maximum deviation ranges found between the planned and placed implants show that, although deviations occur, guided surgery is not far from accurate.

Chronic osteomyelitis of the jaw is an inflammatory reaction of bone tissue of infectious origin that affects the medullary cavity. The main causes of osteomyelitis are odontogenic or traumatic. Bibliographic research, the following electronic databases have been searched: Pubmed Medline and the Chochrane Library Plus. Clinical symptoms are pain, inflammation, suppuration, intraoral or extraoral drainage fistulas. Bone and soft tissues that do not respond favorably to treatment, potentially can lead to bone sequestra. Diagnosis should include a histopathological study throughout a proper biopsy. Identifying the responsible microorganisms is not easy, as the sample can be contaminated by nearby sites. However, a presumptive diagnosis can be made through clinical and radiographic evaluation. Treatment for osteomyelitis involves eliminating the source of infection and necrotic tissue, establishing drainage, restoring blood supply, and controlling the infection with appropriate antimicrobial therapy. Broad-spectrum antibiotics like penicillin or clindamycin are often prescribed initially, but the regimen may be adjusted based on the microbiological findings. Long-term antibiotic therapy is generally required, ranging from 4 to 6 weeks, depending on the severity and chronicity of the infection. Key words:Chronic Osteomyelitis, antibiotic, mandible, microbiology, surgery.

We report the case of a 38-year old male patient with sinusitis caused by an infected follicular cyst due to an ectopic impacted third molar in the right maxillary sinus.A 10-day antibiotherapy regimen was administered; subsequently, the cyst and the third molar were removed achieving complete recovery.Fibrous dysplasia was diagnosed at follow-up examination (occupation of the maxillary sinus by bone tissue was observed in a radiographic examination) and confirmed by biopsy.In cases of odontogenic sinusitis, thorough examination is crucial, as evidenced by the case reported in this study.A Literature review was performed in order to identify the diagnostic methods currently available and the clinical features, complications and treatment for both, odontogenic maxillary sinusitis and fibrous dysplasia.

To combat the coronavirus pandemic different vaccines have been developed. However, diverse adverse effects have been reported due to their use, including oral manifestations. Our objective is to review the existing bibliography to analyze what complications these vaccines have caused in the oral cavity. A bibliographic search was conducted by two independent reviewers (TS and CL), in parallel in 6 electronic databases (PubMed, Scopus, Cochrane, Google Scholar, LILACS, BioMed Central). A total of 22 articles were analyzed. The most frequent adverse effect was oral lichen planus, with a higher prevalence in women and after the Pfizer mRNA BNT162b2 vaccine. These complications are minor and resolve with treatment, so the benefit of the use of vaccines outweigh the potential risks associated with these. Key words:Covid-19 vaccine, oral lesions, oral manifestations, SARS-CoV-2 vaccine, oral symptoms.

Adequate bone volume is essential for implant placement, and in many cases, can only be achieved through bone grafting. However, impaction of lower third molars can cause bone lysis in the distal alveolar area of the second molar. Hence, this review evaluates the effectiveness of autogenous dentin in alveolar preservation and bone augmentation in implant surgery, as well as its role in preventing the development of bone defects and subsequent periodontal pocket formation after lower third molar extraction. A bibliographic review was conducted across electronic databases, including PubMed/MEDLINE and the Cochrane Library Plus. Multiple studies concluded that autogenous dentin is suitable for bone regeneration. Autogenous dentin enhances bone regeneration in the extraction socket, facilitates bone volume augmentation in implant surgery, and prevents periodontal pocket formation distal to the second molar following lower third molar extraction.