Trends in frequency and prevalence of oral cancer and oral squamous cell carcinoma in mexicans. A 20 years retrospective study

Objective. To establish the time trends of the frequency and prevalence of oral cavity cancer in regard to age and gender in a 20-years (time period 1989 ? 2008) cohort of Mexicans. Design and Setting. 13,235 head and neck biopsies from the archive of the Oral Pathology Laboratory, Dental School, National Autonomous University of Mexico were revised. The cases with diagnoses of oral cancer were selected. Gender and age at diagnosis was obtained from medical records. The frequency and prevalence of oral cavity cancer and oral squamous cell carcinoma were assessed biannually in regard to the total number of population served by the oral pathology laboratory. The statistical significance of trends was established using the linear logistic regression (curve estimation) test (s 0.05). Results. 298 cases (138 males; 160 females) of oral cancer were included; 167 (92 females; 75 males; female:male ratio: 1.1:1) corresponded to oral squamous cell carcinoma. From 1989 to 2008 the prevalence of oral cancer and oral squamous cell carcinoma increased 200% (s 0.05) and 100% (s 0.000) respectively. The increase of frequency and prevalence was observed in both genders however only in females was significant (s 0.000). We do not identify changes in the age at diagnosis. Conclusions. Oral cancer, specifically oral squamous cell carcinoma, has increase in Mexicans females in the last 20 years

Revista Odontológica Mexicana CASE REPORT www.medigraphic.org.mx Multi-disciplinary approach for rehabilitation of a partially edentulous patient: Case presentation Manejo multidisciplinario para la rehabilitación de un paciente parcialmente desdentado: P

ABSTRACT Multidisciplinary treatment for oral rehabilitation of a partially edentulous patient with atrophic process is paramount to emit correct diagnosis and to determine the most convenient treatment plan which might restore appropriate masticatory function and adequate aesthetics. The clinical case here presented is that of a partially edentulous 51 year old male. The periodontics, prosthetics, and orthodontic departments jointly concurred in emitting a total rehabilitation diagnosis. As part of the treatment, it was decided to orthodontically extrude upper right central and lateral incisors in order to achieve enhanced bone levels. Five months into the treatment, four implants were put into place; in a simultaneous fashion, elevation of the maxillary sinus fl oor was undertaken. This process was performed with the Caldwell Luc technique, with the use of an electrical hand-piece device. During the same surgical procedure, another implant was placed in the area of the left upper fi rst molar. Elevation of the sinus fl oor was conducted following Summers technique. Six months after placing the implants, implants were uncovered and healing abutments were put into place. Three months later, a prosthetic rehabilitation was initiated by placing an implant-supported prosthesis on the right side of the upper jaw, a single zircon crown on the implant in the fi rst upper left molar, and a bilateral, partially removable prosthesis on the lower jaw. Achieved results, with respect to function and aesthetics, were deemed satisfactory by the patient. RESUMEN El manejo multidisciplinario para la rehabilitación bucal de un paciente parcialmente desdentado con un proceso atrófico, es de suma importancia para lograr un diagnóstico correcto y así poder determinar el tratamiento más adecuado, devolviendo la función masticatoria y estética. El caso clínico que se presenta es de un paciente masculino de 51 años de edad parcialmente desdentado, el cual fue diagnosticado en conjunto con los departamentos de periodoncia, ortodoncia y prótesis para su rehabilitación bucal. Dentro del tratamiento se decidió realizar la extrusión forzada lenta, ortodóncicamente asistida, de los órganos dentarios (o.d.) central y lateral superior derecho para mejorar el proceso óseo y posteriormente hacer la colocación de cuatro implantes endóseos, realizando simultáneamente la elevación de piso de seno maxilar, utilizando la técnica de Caldwell Luc con piezoeléctrico. En el mismo acto quirúrgico se realizó la colocación de otro implante en la zona del primer molar superior izquierdo y se realizó elevación del piso de seno con la técnica de Summers. Seis meses posterior a la colocación de implantes se realizó el descubrimiento de los mismos y se colocaron tornillos de cicatrización. Tres meses después, se inició con la rehabilitación protésica, colocando una prótesis fi ja implanto soportada de zirconia en la zona del maxilar superior derecho, una corona individual de zirconia en el implante del maxilar superior izquierdo y una prótesis parcial removible bilateral inferior. Los resultados que se obtuvieron fueron satisfactorios para el paciente tanto en función como en estética