Acta Otorrinolaringol Esp. 2017;68(5):307---308
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LETTER TO THE EDITOR Do Women With a History of Pregnancy and Endodontics, Have Higher Risk of Maxillary Fungal Ball?夽 ¿Tienen las mujeres con antecedente de gestación y endodoncia, mayor riesgo de presentar bola fúngica maxilar? Dear Editor, We read with interest the article published by Lop-Gros et al.,1 who show that the maxillary fungal ball (MFB) presents in patients who have a history of using materials for endodontics with a high affinity for fungi; is more common in female patients and that the number of cases of MFB has increased in recent years. MFB is the most common fungal sinusitis and generally presents in adults. It is infrequent in children and teenagers probably due to the fact that the dental primordium is located beneath the maxillary sinus, limiting its access during paediatric endodontics. Although several possible causes have been analysed, we believe it would be of interest to analyse the background endodontics, due to the increase in the incidence of MFB in patients who have undergone said procedure, representing a possible aetiological factor.1 Another major characteristics is that this disease presents mainly in females.2 Several authors have reported a higher number of female patients with MFB,1---4 the inherent characteristic of this population group being pregnancy, which predisposes the woman to the presence of cavities or dental erosion, either temporarily or permanently, through changes during pregnancy such as the reduction of saliva ph, increase in gingival circulation and reduction of the buffer effect. These events may lead to an increase in cariogenic microorganisms,5 and the performing of endodontic therapy, which could explain the higher number of female patients with MFB. Therefore, faced with an uncertain physio-pathological mechanism for
夽 Please cite this article as: Vergara-de la Rosa E, Galvez-Olortegui J, Vargas-Armas C, Galvez-Olortegui T. ¿Tienen las mujeres con antecedente de gestación y endodoncia, mayor riesgo de presentar bola fúngica maxilar? Acta Otorrinolaringol Esp. 2017;68:307---308.
MFB, should we be asking: do women with a history of pregnancy and endodontics, have higher risk of maxillary fungal ball? Another factor associated with the presence of MFB is the use of metals such as zinc oxide, a component of endodontic materials, which was found both in the materials used for endodontics and in the operatory samples of patients with MFB,1,3 reinforcing the possibility of an exogenous cause in MFB origin. This exogenous cause could be heightened by the event of MFB in patients on whom bovine bone grafts were performed, in order to increase the height of the alveolar bone for dental implant.4 In order to achieve an early diagnosis we also consider that any clinical suspicion of MFB present in women with chronic maxillary sinusitis who do not respond to medical treatment should be noted. As a result, complications such as invasive fungal presentation could be avoided. Finally, recommendations for multi-disciplinary patient management are required for those patients who present with dental traumas with maxillary sinus compromise, in order to perform clinical and imaging evaluations which detect possible changes beyond dental problems. The odontologic community should also be warned about the probable risk of MFB in female patients, with a history of pregnancy and on whom zinc oxide was used in endodontics.
References 1. Lop-Gros J, Gras-Cabrerizo JR, Bothe-González C, MontserratGili JR, Massegur-Solench ASH. Bola fúngica sinusal: análisis de nuestra casuística. Acta Otorrinolaringol Esp. 2015;30: 1---6. 2. Nomura K, Asaka D, Nakayama T, Okushi T, Matsuwaki Y, Yoshimura T, et al. Sinus fungus ball in the Japanese population: clinical and imaging characteristics of 104 cases. Int J Otolaryngol. 2013;2013:731640. 3. Nicolai P, Mensi M, Marsili F, Piccioni M, Salgarello S, Gilberti E, et al. Maxillary fungus ball: zinc-oxide endodontic materials as a risk factor. Acta Otorhinolaryngol Ital. 2015;35:93---6. 4. Scolozzi P, PÉrez A, Verdeja R, Courvoisier DS, Lombardi T. Association between maxillary sinus fungus ball and sinus bone grafting with deproteinized bovine bone substitutes: a case-control study. Oral Surg Oral Med Oral Pathol Oral Radiol. 2016;121: e143---7. 5. Laine MA. Effect of pregnancy on periodontal and dental health. Acta Odontol Scand. 2002;60:257---64.
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308 Esteban Vergara-de la Rosa,a,b,c,∗ José Galvez-Olortegui,d,e Carlos Vargas-Armas,a,f Tomas Galvez-Olorteguic,d a Unidad de Investigación Clínica, Scientia Clinical and Epidemiological Research Institute, Trujillo, Peru b Servicio de Otorrinolaringología, Hospital Regional Docente de Trujillo, Trujillo, Peru c Escuela de Posgrado, Universidad Privada Antenor Orrego, Trujillo, Peru d Unidad Generadora de Evidencias y Vigilancia Epidemiológica, Scientia Clinical and Epidemiological Research Institute, Trujillo, Peru
LETTER TO THE EDITOR e Facultad de Medicina, Universidad Nacional de Trujillo, Peru f Servicio de Periodoncia e Implante, Unidad de Segunda Especialización en Estomatología, Universidad Nacional de Trujillo, Peru ∗
Corresponding author. E-mail address:
[email protected] (E. Vergara-de la Rosa).