The aim of this study was to identify the most relevant dental factors and iatrogenic causes in the development of pathological changes to the sinus membrane and to analyse their possible influence on the development of odontogenic sinusitis. A descriptive, observational study was designed, with 276 patients who had been evaluated via cone beam computed tomography, analysing possible sinus thickening factors, such as apical infections, endodontic treatments, periodontitis, radicular cysts and impacted teeth, as well as iatrogenic factors caused by implant treatments or the development of oroantral communications produced during tooth extraction manoeuvres. Among the dental factors, periodontitis (47.1%), apical pathology (23.5%) and endodontic treatments (23.1%) were the predominant causes of sinus membrane thickening that most frequently produced an occupancy between 2 and 10 mm. Regarding the implant treatments, the placement of implants through the floor of the maxillary sinus was the main cause (9.8%), followed by sinus elevation techniques (6.2%). Dental extraction was the first cause of oroantral communication (5.0%), being the procedure that caused the greatest thickening of the sinus membrane. This study highlights the importance of dental treatments and iatrogenic factors in sinus pathology, and the need for diagnostic interrelations between the different specialists who address this pathology.

The main objective of this research was to analyze the economic, social, and emotional repercussions among Galician dentists (Spain) as a consequence of the COVID-19 pandemic. A survey was filled out by 347 professionals. After verifying the survey’s reliability using Cronbach’s alpha = 0.84, the professional activity and emotional state of the participants were assessed based on aspects related to their personal and family data. The economic impact of the pandemic was considerable, and all participants experienced a decrease in income. In total, 72% of the participants considered that working with personal protective equipment (PPE) made their clinical activities difficult, and 60% expressed concern about being infected during their professional practice. Among the professionals, women (p = 0.005), and separated, divorced, or single professionals (p = 0.003) were the most strongly affected. Separated or divorced professionals were the group that most frequently raised the need to make a radical change in their lives. Finally, it was observed that the emotional consequences varied substantially in the lives of these professionals, mainly among female dentists (p = 0.010), separated and divorced men (p = 0.000), and those with fewer years of professional practice (p = 0.021). The COVID-19 pandemic had an economic impact, due to the decrease in the number of patients and hours of attention, as well as an emotional impact, mostly expressed in the form of sleep disorders and stress. The most vulnerable professionals were women and professionals with fewer years of experience.

Background: Rhinosinusitis is an increasingly prevalent condition that compromises patients’ quality of life and imposes a substantial burden on healthcare systems. Odontogenic sinusitis, a predominantly unilateral form of rhinosinusitis, accounts for up to 40% of unilateral maxillary sinusitis cases. This study aimed to characterize the clinical presentation, radiological extension, and quality-of-life impairment associated with odontogenic sinusitis. Methods: Thirty-eight patients with unilateral sinusitis caused by dental pathology/treatment were recruited. OS diagnosis criteria were established according to EPOS-2020 guidelines. The 22-item SNOT-22 questionnaire was used to assess symptom severity and social/emotional impact. In addition, all patients underwent CT imaging and were staged with the Lund–Mackay scale for involvement of the maxillary, anterior and posterior ethmoid, sphenoid and frontal sinuses. Results: Smoking was associated with significantly worse patient-reported quality of life, with higher SNOT-22 scores in current smokers than in non-smokers (59.4 vs. 38.2; p = 0.026). Purulent discharge was associated with greater radiological severity, longer symptom duration, and a markedly higher prevalence of extra-maxillary extension (92.3%; p < 0.001). Extra-maxillary involvement was identified in 71.1% of patients, predominantly affecting the anterior ethmoid sinus. Although Lund–Mackay scores objectively reflected radiological disease extension, their correlation with symptom burden was limited. Conclusions: Odontogenic sinusitis frequently presents with substantial extra-maxillary extension and significant impairment of quality of life. Smoking and purulent discharge were associated with markers of greater disease severity in this exploratory cohort. These associations should be interpreted cautiously and confirmed in larger studies using multivariable analyses.