Augmentation of Therapeutic Efficacy of Extraction of Causative Teeth by Irrigation for Odontogenic Maxillary Sinusitis.

BACKGROUND/AIM: Odontogenic maxillary sinusitis is a clinically popular disease, but radical surgery and endoscopic surgery are often required. In the present study, we compared for the first time the therapeutic efficacy of the extraction of causative teeth with or without irrigation of the extraction fossa. PATIENTS AND METHODS: A total of 60 patients underwent extraction of causative tooth. Among them, 34 patients underwent irrigation, while other 26 patients did not. Based on computed tomography (CT) images, treatment efficacy was quantified by the percentage of the remaining maxillary sinus mucosal lesions. The extent of therapeutic efficacy was evaluated following five grades, based on the percentage of remaining lesions: Grade 1 (0%) (disappearance of lesions), Grade 2 (roughly 10%), Grade 3 (roughly 30%), Grade 4 (approximately 50%) and Grade 5 (100%) (no improvement of the lesions). RESULTS: Irrigation significantly augmented the therapeutic efficacy of tooth extraction for maxillary sinus mucosal lesions (mean grade: decreasing from 3.27 to 1.35). CONCLUSION: The combination of tooth extraction and irrigation may contribute to the reduction of the necessity of surgery for the maxillary sinuses.

Surgical Endoscopic Treatment of Odontogenic Sinusitis.

Introduction: Odontogenic sinusitis is a frequent disease of the maxillary sinus, resulting from a dental inflammatory condition or a foreign body migrated in the sinus cavity. We performed a clinical retrospective study aimed to review the two surgical endoscopic approaches for odontogenic maxillary sinusitis middle and inferior meatotomy, in terms of realistic indications, efficacy, outcomes, and possible complications. Materials and Methods: In our study, we included a number of 400 patients with odontogenic maxillary sinusitis divided into two groups, treated in our hospital over five years, from January 2019 to December 2023. The patients included in this research were over 18 years old, diagnosed with odontogenic maxillary sinusitis, and underwent either middle meatal antrostomy or inferior meatotomy. Results: We examined the medical records of 400 patients. The vast majority of patients had a history of dental interventions, and the most affected tooth was the first maxillary molar. The symptoms at admission were typical for sinusitis: nasal obstruction, anterior or posterior rhinorrhea, hyposmia to anosmia, cacosmia, and pain or facial pressure. 80% of the patients in the study underwent middle meatal antrostomy, while 20% underwent inferior meatotomy. There were no significant differences between these two approaches in terms of efficacy, complication rates, recovery, or relapses. The complications that occurred after the surgical treatment were minor and with a very low frequency. The most reported were middle meatus synechiae and the persistence of the meatotomy ostium, with mucus recirculation (in patients with inferior meatotomy). Conclusions: Endoscopic surgical treatment of odontogenic maxillary sinusitis can be done as middle or inferior meatotomy, each having specific indications. The maxillary antrostomy is preferred in the majority of cases, as it is a procedure in which the natural ostium of the maxillary sinus is enlarged, thereby maintaining the natural drainage pathway of the sinus. However, the inferior meatotomy is preferred in the case of foreign bodies or maxillary sinus retention cysts localized at the level of the sinus floor or in the alveolar or lateral recesses, or as part of a combined approach (inferior and middle meatotomy), when the ablation of a "fungus ball" is required.

Histopathology of Recalcitrant Maxillary Sinusitis Necessitating Endoscopic Medial Maxillectomy.

OBJECTIVES: Endoscopic medial maxillectomy (EMM) is an effective intervention for patients with recalcitrant maxillary sinusitis after previous middle meatal antrostomy. The pathophysiology of refractory maxillary sinusitis is incompletely understood. We aim to identify trends in structured histopathology (SHP) to better understand how tissue architecture changes contribute to refractory sinusitis and impaired mucociliary clearance. METHODS: All patients who underwent EMM or standard maxillary antrostomy for recalcitrant maxillary sinusitis of various forms were included. Retrospective chart review was conducted to collect information on demographics, disease characteristics, comorbid conditions, culture data, and SHP reports. Chi-squared and logistic regression analyses were performed for SHP variables. RESULTS: Forty-one patients who underwent EMM and 464 patients who underwent maxillary antrostomy were included. On average, the EMM cohort was 10 years older (60.9 years vs. 51.1 years; p = 0.001) and more often had a history of prior sinus procedures (73.2% vs. 40.9%; p < 0.001). EMM patients had higher rates of fibrosis (34.1% vs. 15.1%, p = 0.002), and this remained statistically significant when controlling for prior sinus procedures and nasal polyposis (p = 0.001). Cultures positive for pseudomonas aeruginosa (38.2% vs. 5.6%, p < 0.001) and coagulase negative staphylococcus (47.1% vs. 23.5%, p = 0.003) were more prevalent in the EMM group. CONCLUSION: Fibrosis and bacterial infections with Pseudomonas and coagulase negative Staphylococcus were more prevalent in patients requiring EMM. This may contribute to the multifactorial etiology of impaired mucociliary clearance in patients with recalcitrant maxillary sinusitis. LEVEL OF EVIDENCE: 3 Laryngoscope, 134:2646-2652, 2024.

Incidence of Sinusitis Postoperatively in Orthognathic Surgery: A Systematic Review and Meta-Analysis.

Maxillary osteotomies as a component of orthognathic surgery disrupt the normal anatomy and function of the sinus. The osteotomy with advancement of the inferior component of the sinus leaves a bony and mucosal opening in the sinus. Immediately after surgery, nasal drainage is impeded because of intranasal swelling. Acute and chronic maxillary sinusitis would be expected; however, its incidence as an expected complication is not well documented. A systematic review and meta-analysis was completed using PubMed to determine the incidence of sinusitis after maxillary orthognathic surgery. Studies were reviewed by two authors, and incidence data were extracted. Two hundred six articles were identified with 24 meeting the criteria for analysis. The incidence of sinusitis was based on 4213 participants who had undergone orthognathic surgery. Twenty-three studies reported a total number of sinusitis cases, and the results demonstrated a pooled incidence of 3.3% (95% confidence interval: 1.77, 6.06). One study did not report a total number of cases but reported chronic sinusitis survey-duration-based and Lund-Mackay scores. These scores, respectively, worsened from 7.6 to 14.8 and from 1.58 to 2.90 postoperatively. Despite the variability of maxillary surgery, the surgical technique, and the postoperative management, the incidence is low but sinusitis does occur. Prospective studies with validated questionnaires within the context of a specific protocol may further elucidate the causality of sinusitis. Further, patients with sinonasal symptoms postsurgery should be encouraged to consult with an otolaryngologist to ensure prompt treatment.

Simultaneous management of chronic maxillary sinusitis from dental origin and the relevance of nasal septal deviation: A retrospective evaluation of 65 cases.

PURPOSE: Dental origin constitutes most chronic unilateral maxillary sinusitis (CMS) and is referred to as dental chronic maxillary sinusitis (DCMS). Recently, dental implants and related surgical procedures have become more prevalent. We present an evaluation of the simultaneous treatment of DCMS. MATERIALS AND METHODS: A retrospective review of records from 395 patients with CMS treated at our medical center from 2015 to 2020 found 65 patients diagnosed with DCMS. Statistical analyses were performed using the records data. RESULTS: Four patients were excluded. The final study population included 35 males and 26 females with a mean age of 55. 29 % were post-dental implant placement or related pre-prosthetic procedures. Presenting symptoms included middle meatus edema (72 %), pus in the middle meatus (70 %), and nasal secretion (39 %). Clinical findings included septal deviation (39 %), among them 87 % deviated toward the diseased sinus, OAF (49 %), and nasal polyposis (16 %). In 32 patients, the OAF was closed in one layer using a local mucoperiosteal flap. In 29 patients, the closure was done in two layers, including a buccal fat pad (BFP) regional flap. One patient had a reopened OAF, and five patients required revision surgery. 92 % of patients in this study had complete clinical and radiological resolution of the DCMS. CONCLUSIONS: Relevance of nasal septal deviation in association with DCMS is present. There is no distinct difference in the manner of OAF closure if it is done in a simultaneous procedure. One stage combined multidisciplinary surgical procedure is sufficient to treat DCMS.

One-stage combined ENT and dental surgical treatment of odontogenic sinusitis: a prospective study.

PURPOSE: The study analyses outcomes of the surgical treatment of odontogenic sinusitis that concurrently address sinusitis and its dental source. METHODS: A total of 364 adult patients were included, representing 13% of all patients we have operated on for any rhinosinusitis over the past 18 years. The diagnosis was based on both ENT and dental examinations including CT imaging. Patients were divided into three groups: (1) FESS with dental surgery without antrotomy, (2) FESS with intraoral antrotomy, and (3) intraoral surgery without FESS. The mean postoperative follow-up was 15 months. RESULTS: First group involved 64%, second group 31%, and third group 6% of the cases. The one-stage combined ENT and dental approach was used in 94% of cases (group 1 and 2) with a success rate of 97%. Concerning FESS, maxillary sinus surgery with middle meatal antrostomy only was performed in 54% of patients. Oroantral communication flap closure was performed in 56% of patients (success rate 98%). Healing was achieved within 3 months. The majority (87%) of patients were operated on unilaterally for unilateral findings. Over the past 18 years, a 6% increase of implant-related odontogenic sinusitis was observed. CONCLUSION: Odontogenic sinusitis is common, tending to be unilateral and chronic. Its dental source needs to be uncovered and treated and should not be underestimated. Close cooperation between ENT and dental specialists has a crucial role in achieving optimal outcomes. The one-stage combined surgical approach proves to be a reliable, safe, fast and effective treatment.

Trends of Odontogenic Sinusitis Incidence During the COVID-19 Pandemic.

OBJECTIVES: The COVID-19 pandemic affected the epidemiology of several diseases. This study aims to compare the incidence of surgically treated odontogenic sinusitis (ODS) before and during the COVID-19 pandemic and identify unique features. METHODS: A retrospective chart review of patients who underwent at least maxillary antrostomy at a tertiary referral center was performed. The patients were divided into two cohorts: "pre-COVID" (March 2018 to February 2020) and "COVID" (March 2020 to February 2022). Data on demographics, comorbidities, and treatment interventions were collected and analyzed. RESULTS: Of the 734 patients who underwent maxillary antrostomy, 370 (50.4%) were operated on during the COVID period, with a mean age of 53.1 ± 15.7 years. ODS was found as the etiology of 22 (6%) and 45 (12.2%) of the pre-COVID and COVID cases, respectively (p = 0.006). Although no difference was found in the incidence of diabetes (p = 0.9) or obesity (p = 0.7) between groups, a trend toward higher incidence of immunosuppression was found in the pre-COVID patients (18.2% vs. 0%, p = 0.06). A higher incidence of sphenoid sinus involvement (31.8% vs. 8.9%, p < 0.05) was identified in the pre-COVID group; however, no differences in ethmoid (86.4% vs. 86.7%, p = 0.999) or frontal sinus involvement (54.5% vs. 37.8%, p = 0.3) were found between the groups. CONCLUSION: There was an increase in the incidence of ODS during the first 2 years of the COVID-19 pandemic compared to the 2 years prior. Similar clinical characteristics were found in both groups. Future studies focusing on specific etiologies to explain ODS preponderance may help determine optimal treatment and prevention strategies. LEVEL OF EVIDENCE: 3 Laryngoscope, 134:1597-1602, 2024.

Total times to treatment completion and clinical outcomes in odontogenic sinusitis.

BACKGROUND: Multidisciplinary collaboration is essential for effective odontogenic sinusitis (ODS) management. One point of debate has been the optimal timing of primary dental treatment and endoscopic sinus surgery (ESS), but differences in time to completion of these treatment pathways have not been studied. METHODS: A retrospective cohort study was conducted on ODS patients from 2015 to 2022. Demographic and clinical variables were recorded, and various durations of time were analyzed from rhinologic consultation through treatment completion. Resolution of sinusitis symptoms and purulence on endoscopy was also recorded. RESULTS: Eighty-nine ODS patients were analyzed (47.2 % male, median 59 years-old). Of the 89 ODS patients, 56 had treatable dental pathology, and 33 had no treatable dental pathology. Median time to treatment completion for all patients was 103 days. Of 56 ODS patients with treatable dental pathology, 33 had primary dental treatment, and 27 (81 %) required secondary ESS. In patients who underwent primary dental treatment followed by ESS, median time from initial evaluation to treatment completion was 236.0 days. If ESS was pursued primarily followed by dental treatment, median time from initial evaluation to treatment completion was 112.0 days, which was significantly shorter than if dental treatment was pursued primarily (p = 0.002). Overall symptomatic and endoscopic resolution was 97.8 %. CONCLUSIONS: After dental and sinus surgical treatment, ODS patients experienced 97.8 % resolution of symptoms and purulence on endoscopy. In patients with ODS due to treatable dental pathology, primary ESS followed by dental treatment resulted in a shorter overall treatment duration than primary dental treatment followed by ESS.

Sinusitis Following Reduction Malarplasty.

The aim of this paper was to search for reported cases of sinus infection following reduction malarplasty and present guidelines for the prevention of sinusitis. Two cases of maxillary sinusitis that developed after reduction malarplasty has been reported, which were treated with endoscopic sinus surgery. Histologically, thickness of the mucosal lining of the maxillary sinus (Schneiderian membrane) was 0.41 mm at sinus floor, and 0.38 mm at 2 mm above the floor. In functional endoscopic sinus surgery (FESS), the uncinate process is removed, exposing the hiatus semilunaris. The anterior ethmoid air cells are opened, allowing better ventilation but leaving the bone covered with mucosa. FESS improves the function of the osteomeatal complex and therefore provides better ventilation of the sinuses. In odontogenic maxillary sinusitis, regeneration of the mucosal lining (ciliated epithelium regeneration and bone healing) was achieved in 1.4±1.2 years after modified endoscopic sinus surgery. In in zygomatic implant surgery, 12.3% patients presented maxillary sinusitis, and the most common treatment was antibiotics alone or combined with FESS. To prevent sinusitis after reduction malarplasty, accurate osteotomy and fixation are needed, especially when using only an intraoral incision. After surgery, radiological examinations (Water's view, computed tomography if needed) should be performed as part of follow-up. Prophylactic antibiotics (macrolides) are recommended for 1 week if the sinus wall is opened. If swelling or air-fluid level persists, re-exploration and drainage should be performed. In patients with risk factors such as age, comorbidities, smoking, nasal septal deviation, or other anatomical variants, simultaneous FESS is suggested.

Appropriate Implant Rehabilitation in Patients With Iatrogenic Oroantral Fistula and Odontogenic Maxillary Sinusitis.

Oroantral fistula (OAF) is the most common etiology for odontogenic maxillary sinusitis that can be caused by tooth extractions, failed maxillary sinus lifts, bone grafts, and poor positioning of dental implant fixtures. A 52-year-old man presented with an OAF and maxillary sinusitis after implant placement and bone grafting. The authors treated the patient with modified endoscopic sinus surgery to obtain OAF closure and provided dental implant placement procedures afterward. The authors also treated 8 other similar cases with favorable outcomes. In this study, the authors report the know-how of implant placement procedures in patients with OAF and maxillary sinusitis.

Is tooth conservation possible in odontogenic sinusitis? Prospective evaluation of affected teeth condition-based protocol.

BACKGROUND: Affected tooth conservation is an often-overlooked problem in odontogenic sinusitis (ODS) treatment. Treatable dental conditions are improperly managed with extractions imposing an unnecessary health burden on patients. Furthermore, no down-to-earth protocols have been proposed for the clinical management of these patients. AIM: This study aims to prospectively validate a treatment protocol for ODS based on dental mobility, an indirect sign of poor long-term tooth survival. The protocol suggests endoscopic sinus surgery (ESS) alone followed by dental treatment for immobile affected teeth, and concomitant ESS and extraction for mobile teeth. Extraction of immobile teeth is considered if inflammation persists after the treatment. MATERIAL AND METHODS: Forty cases treated with our protocol were prospectively examined about ODS cure and preservation of affected teeth. RESULTS: Among the 35 patients with immobile affected teeth, only one required extraction for complete ODS cure after ESS. All five cases with mobile teeth and one with postoperative extraction had marginal periodontitis. CONCLUSION AND SIGNIFICANCE: Ninety-seven percent of immobile affected teeth were preserved with complete ODS cure in this study. In case marginal periodontitis is present, extraction is likely to be necessary, although ESS should be prioritized over blanket extractions to preserve the teeth for patients' quality life.

Features of Odontogenic Sinusitis Associated With Dental Implants.

OBJECTIVES: With the increase in dental implants for tooth loss, odontogenic sinusitis following maxillary dental implants is frequently encountered in otorhinolaryngology practice. The authors aimed to reveal the association between implant extrusion into maxillary sinus, along with implant-related complications in patients diagnosed with implant-related odontogenic sinusitis (IR-ODS). STUDY DESIGN: Case-control study. METHODS: This study enrolled 60 patients who received functional endoscopic sinus surgery due to IR-ODS. The preoperative sinus computed tomography was retrospectively reviewed. Among the 120 maxillary sinuses of the 60 patients, 68 sides were diagnosed with IR-ODS sides, whereas 27 sides showed no clinical or radiological evidence of this condition after the implant insertion and were defined as the control sides. Statistical analysis between these two groups was conducted, in addition to odds ratio (OR) calculations for associations with IR-ODS. RESULTS: The mean age of the IR-ODS subjects was 59.5 ± 19.1, with a male to female ratio of 32/28 (53.3%/46.7%). Implants extruding by more than 4 mm into the maxillary sinus, peri-implantitis, bone graft disruption-extrusion were associated with a significantly higher incidence in the IR-ODS (p = 0.035, p = 0.003, p = 0.011, respectively). The IR-ODS sides showed an adjusted-OR (95% confidence interval) of 27.4 (2.7-276.5) for extrusion length >4 mm, 11.8 (3.0-46.5) for peri-implantitis, and 34.1 (3.3-347.8) for bone graft disruption (p = 0.005, p < 0.001, and p = 0.003, respectively). CONCLUSION: Maxillary dental implants extruding more than 4 mm into the maxillary sinus, peri-implantitis, and disrupted-extruded bone grafts show significant association with IR-ODS. LEVEL OF EVIDENCE: 4 Laryngoscope, 133:237-243, 2023.

Tips and tricks for management of the dysfunctional maxillary sinus.

PURPOSE OF REVIEW: To review the various factors associated with the most common cause of maxillary sinus dysfunction; recalcitrant chronic maxillary sinusitis (RCMS). In addition, available medical and surgical management options are discussed along with various tips and tricks for optimal management. RECENT FINDINGS: Defects in mucociliary clearance, immunodeficiency, anatomic factors, and infectious etiologies have been implicated in dysfunction of the maxillary sinus leading to RCMS. Medical management including oral antibiotics or topical drugs have shown varying degrees of success. Endoscopic modified medial maxillectomy (EMMM) has been shown to significantly improve symptoms in patients with RCMS. SUMMARY: A dysfunctional maxillary sinus presents a clinical challenge. A thorough evaluation of any potential contributing factors must be done in addition to an assessment of the adequacy of prior surgical treatment of the maxillary sinus. Beyond the middle meatal antrostomy, EMMM can be used to effectively address RCMS. In cases that fail EMMM, removal of the condemned mucosa to encourage auto-obliteration of the sinus can be considered.

Tomografía computarizada en la identificación de la sinusitis odontogénica de origen endodóntico: reporte de un caso / Computerized tomography in the identification of odontogenic sinusitis of endodontic origin: report of a case

Objetivo: se presenta el caso clínico de sinusitis de origen endodóntico, conocida como síndrome en-doantral, haciendo énfasis en la dificultad de diag-nóstico con radiografía periapical y la importancia de la tomografía computarizada. Caso clínico: una mujer de 32 años, con antecedentes de apretamiento dental nocturno y sinusitis recurrente, fue remitida para evaluación endodóntica. El examen clínico reve-ló sensibilidad a la percusión y palpación en la unidad dental. La radiografía periapical no indicó lesión en el diente 16 y la prueba de sensibilidad pulpar fue ne-gativa, además, la tomografía computarizada reveló una extensa lesión periapical y comunicación entre la raíz del diente 16 y el seno maxilar, confirmada por la pérdida de la continuidad de la imagen hiperdensa en el suelo del seno, lo que llevó al tratamiento endo-dóntico. El control de la infección dental resolvió la sinusitis, resaltando la importancia del diagnóstico preciso y el tratamiento en casos de sinusitis odon-togénica. Conclusión: este caso destaca el valor de la tomografía computarizada como herramienta diag-nóstica crucial en contextos clínicos complejos (AU)

Objective: the clinical case of sinusitis of endodontic origin, known as endoantral syndrome, is presented, emphasizing the difficulty of diagnosis with periapical radiography and the importance of computed tomography. Clinical case: a 32-year-old woman, with a history of tooth clenching and recurrent sinusitis, was referred for endodontic evaluation. The clinical examination revealed sensitivity to percussion and palpation in the dental unit. The periapical radiograph did not indicate a lesion in tooth 16 and the pulp sensitivity test was negative, in addition, the computed tomography revealed an extensive periapical lesion and communication between the root of tooth 16 and the maxillary sinus, confirmed by the loss of continuity of the hyperdense image in the sine floor, which led to endodontic treatment. Dental infection control resolved sinusitis, highlighting the importance of accurate diagnosis and treatment in cases of odontogenic sinusitis. Conclusion: this case highlights the value of computerized tomography as a crucial diagnostic tool in complex clinical contexts (AU)

Frequency and Risk Factors of Maxillary Sinusitis of Endodontic Origin Evaluated by a Dynamic Navigation and a New Filter of Cone-Beam Computed Tomography.

INTRODUCTION: The aim of this study was to determine the frequency and risk factors of maxillary sinusitis of endodontic origin (MSEO) on posterior maxillary teeth evaluated using dynamic navigation and a novel filter of cone-beam computed tomographic (CBCT) imaging. METHODS: CBCT scans of 453 patients (814 teeth) were selected. Data were divided into 4 groups: (1) root canal treatment (RCT), (2) relation of the root apex to the maxillary sinus, (3) apical periodontitis (AP), and (4) maxillary sinus inflammation (no inflammation, periapical osteoperiostitis, periapical mucositis, partial obstruction, or total obstruction). Frequency distribution and cross-tabulation were used for data analysis. The association of maxillary sinus abnormalities with other variables was analyzed using the chi-square test. The significance level was set at 5%, and the association between dependent and independent variables was analyzed using robust Poisson regression models. RESULTS: MSEO was found in 65.6% of the cases, and the highest frequency rates were in the periapical mucositis (44%) and partial obstruction (15.8%) groups. The rates of risk factors were highest in the cases of RCT (54.9%), AP (34.3%), and the root apex in contact with the maxillary sinus (53.8%). The most frequent sex and age group were female (55.8%) and 41-50 years (30.5%). CONCLUSIONS: The frequency of MSEO was high and positively associated with RCT, AP, and the root apex's position in contact with the floor of the maxillary sinus. The maxillary sinus filter of the CBCT software provides a clear image of maxillary sinus abnormalities.

Unilateral, Rostral Maxillary Sinusitis Resulting from Displacement and Retention of an Alveolar Plug in a 4-Year-Old Horse.

Sinusitis is a common occurrence in horses and often develops secondary to dental disease. Extraction of cheek teeth in horses is associated with variable degrees of complications and although postoperative displacement and retention of alveolar plugs has been identified as one such potential complication, few cases of resulting sinusitis have been reported. This manuscript describes a four-year-old Thoroughbred mare that was presented for chronic unilateral left-sided mucopurulent nasal discharge after extraction of the left maxillary second molar tooth two months earlier. Radiographic and computed tomographic (CT) examinations revealed a well circumscribed, soft tissue opacity in the left rostral sinus compartment. Intraoral examination revealed feed impacted in the alveolus of the extracted tooth and an oral sinus fistula. Upper airway endoscopy showed thick, purulent material at the nasomaxillary aperture. Sinoscopy showed unexpectedly clean frontal, dorsal conchal and caudal maxillary sinuses. The alveolar dental plug associated with previous exodontia became apparent within the sinus and was removed through the sinoscopy portal. Repeat endoscopies confirmed progressive clearance of the sinusitis during hospitalization. Unilateral nasal discharge returned three months later. An abscess within the sinus had formed. Complete resolution of the sinusitis was achieved after lancing the abscess and further sinus lavage. Sinoscopy through a frontal sinus trephination portal proved useful in diagnosis and treatment. Detailed evaluation of structures allowed for rapid establishment of adequate drainage and communication between all sinus compartments without osteoplastic surgery.

Prevalence and Risk Factors for Chronic Maxillary Sinusitis After Surgery for Mid-Facial Fracture: A Cross-Sectional Study.

ABSTRACT: Posttraumatic chronic maxillary sinusitis deleteriously affects the life quality of patients with recurrent episodes and related discomfort. However, few studies have been performed to investigate the prevalence of chronic maxillary sinusitis after surgery of mid-facial fracture and related risk factors. The early prevention and cure of posttraumatic chronic maxillary sinusitis have received little attention. This study aimed to investigate the prevalence of chronic maxillary sinusitis after surgery for mid-facial fracture and to identify related risk factors. The authors retrospectively collected the medical history, radiographic examination, and clinical examination of patients with mid-facial fracture (experimental group) and patients with mandibular cyst (control group) in our department between January 2015 and December 2020. A total of 298 patients (416 maxillary sinuses) in the experimental group and 172 patients (344 maxillary sinuses) in the control group were included for analyses. The prevalence of chronic maxillary sinusitis in the experimental group and control group were, respectively, 9.14% and 2.04% ( P < 0.05). History of sinusitis/rhinitis (odds ratio = 63.70, P = 0.000) was an independent risk factor for posttraumatic chronic maxillary sinusitis. In conclusion, these findings showed that the prevalence of chronic maxillary sinusitis after surgery for midfacial fracture was significantly higher than that in the control group and long-term follow-up may be beneficial for these patients. Moreover, patients with a history of sinusitis/rhinitis should be informed of the increased risk.

Treatment of Sinusitis Following Dental Implantation: A Systematic Review and Meta-Analysis.

BACKGROUND: Implantological procedures aimed at rehabilitating upper jaw edentulous patients (dental implant placement and/or maxillary sinus grafting) can sporadically result in sinusitis. In these patients, endoscopic sinus surgery is the most commonly employed treatment, but clinical scenarios and comprehensive management strategies are extremely heterogeneous across studies. OBJECTIVE: We sought to systematically define treatment strategies and related success rates for sinusitis following dental implantation, detailing different current treatment choices and concepts. METHODS: Adopting a PRISMA-compliant review framework, systematic searches were performed in multiple databases using criteria designed to include all studies published until November 2020 focusing on the treatment of human sinusitis following dental implantation. We selected all original studies, excluding case reports, specifying treatment modalities with objective treatment success definitions. Following duplicate removal, abstract and full-text selection, and quality assessment, we reviewed eligible articles for treatment modalities and success rates, which were pooled in a random-effects meta-analysis. RESULTS: Among 581 unique citations, eight studies (181 patients) were selected. Seven studies were retrospective case series. All studies relied on endoscopic sinus surgery, often coupled with intraoral accesses, and assessed therapeutic success endoscopically. The pooled treatment success rate was 94.7% (95% confidence interval, 91.5%-98%). Failures were treated in seven of 15 cases with further antibiotic therapies and in another seven cases with surgical revision. A single patient was lost to follow-up. CONCLUSIONS: Endoscopic sinus surgery appears to be the most frequent treatment of choice for sinusitis following dental implantation, with excellent success rates. The protean clinical picture drawn from the selected studies calls for the standardization of diagnostics and definitions in this field to enable direct comparisons between the results of different studies. The role of postoperative antibiotic therapies, which have been employed unevenly across studies, should also be prospectively investigated.

Evaluation of Related Factors of Maxillary Sinusitis After Le Fort I Osteotomy Based on Computed Tomography: A Retrospective Case-Control Study.

ABSTRACT: Maxillary sinusitis is 1 of the postoperative complications of the Le Fort I osteotomy, this study investigated the related factors of maxillary sinusitis after Le Fort I osteotomy. A total of 23 cases, 92 controls, and 11 related factors were included in this case-control study with a 1:4 case-control ratio. The risk factors for maxillary sinusitis after Le Fort I were examined by least absolute shrinkage and selection operator multivariate conditional logistic regression and least absolute shrinkage and selection operator multivariate linear regression. The patency of maxillary sinus ostium at 6 months after surgery was significantly associated with maxillary sinusitis after Le Fort I osteotomy. Compared with the obstructed maxillary sinus ostium, the percentage of the volume of the healthy air cavity in the complete sinus cavity increased 70.7% when the maxillary sinus ostium was unobstructed, and 95% confidence interval was 0.610 to 0.805. Similarly, when the maxillary sinus ostium was wide, the percentage increased 6.0% compared with the narrow 1, and 95% confidence interval was 0.013 to 0.107. This study indicated that the patency of maxillary sinus ostium has an important impact on maxillary sinusitis after Le Fort I osteotomy. Close attention should be paid to maintain the maxillary sinus ostium and the drainage of maxillary sinuses unobstructed in a clinical setting.

Clinical characteristics of odontogenic sinusitis with periapical lesions.

INTRODUCTION: Although the symptoms and radiographic signs may mimic rhinogenic sinusitis, odontogenic sinusitis (OS) with periapical lesions (PALs) is fundamentally an endodontic infection. It is considered to be one of the main causes of OS, especially when presented unilaterally. Despite this routine dental examination is not performed and periapical infection frequently remains undiagnosed by otolaryngologists and radiologists. MATERIAL AND METHODS: This prospective observational study covered a group of 61 patients with symptomatic OS with PAL. Assessment of quality of life was done using the 22-item Sino-Nasal Outcome Test-22 (SNOT-22) and Oral Health-Impact Profile-14 (OHIP-14). Temporal and etiological relationship between the dental cause and sinonasal complication was established among the otolaryngologist and dental specialist based on the clinical symptoms, nasal endoscopy described according to the modified Lund-MacKay scale, computed tomography (CT) scans measured and scored in compliance with Lund- Kennedy, Zinreich and Estrela scales. RESULTS: Out of 61 patients, 28 (46%) were women and 33 (54%) men. Group median age 49.1 years, ranged from 22.8 to 78.9 years. Total OHIP-14 score was 12.7 ± 11.3, with the highest value obtained in domains describing physical pain (mean 2.9 ± 2.4, median 3) in which the highest score was obtained in item 3 - painful aching in mouth and/or teeth - scored ≥2 by 52.5% of participants. Concerning dental symptoms 11.5% of patients were asymptomatic. Total SNOT-22 score was 40.7 ± 21.1, with the highest value in domains describing nasal symptoms. 23% of patients reported mild, 44.3% moderate and 32.7% severe symptoms. In the endoscopic evaluation 86.8% of cases presented discharge, 73.8% mucosal edema. In 11.5% of cases the polypoid tissues was observed in nasal cavities. The first molar tooth was the most frequently affected with an incidence of 42.6%, followed by the second molar (27.9%). In 33 (48.5%) of cases the inflammatory process caused the discontinuity of the sinus floor, which in 51.5% coexisted with total maxillary sinus opacification. 10 teeth (14.7%) had the periapical lesions with a diameter exceeding 8 mm. In case of the multi-rooted teeth, PALs were usually encountered at more than one root (57.4%). Maxillary and ethmoid sinus were affected in 54% of cases and additional frontal sinus involvement in 32.8%. In 69.6% patients, ostiomeatal complex was obstructed. CONCLUSIONS: Persistent sinonasal symptoms such as rhinorrhea, post-nasal drip and nose congestion along with dental pain may suggest endodontic nature of OS, especially after previous root-canal treatment. The bigger the PAL is in diameter and the closer to the maxillary sinus, the greater effect on its mucosal involvement and obstruction of ostiomeatal complex is observed. PALs around molar or premolar tooth apexes with coexistence of unilateral sinus opacifications should be noticed and mentioned by radiologists and evaluated by dental specialists in order to refer the patient to further treatment.