title: Iatrogenic maxillary sinus exposure during maxillary posterior root-end surgery.
authors.forename: Richard E
authors.initials: RE
authors.lastname: Walton
mesh_terms: D001047:Apicoectomy / Q000009:adverse effects*; D006801:Humans; D007049:Iatrogenic Disease; D008443:Maxillary Sinus / Q000293:injuries*; D015523:Maxillary Sinusitis / Q000150:complications; D009957:Oroantral Fistula / Q000209:etiology; D012220:Rhinitis / Q000150:complications; D019227:Tooth Apex / Q000601:surgery*