In-Vitro Quantitative Comparison of Platelet Rich Fibrin, and Plasma Rich in Growth Factor, with Age, Gender, Blood Parameters

Periodontal therapy and its recent advances has modernised leaps and bounds with newer regenerative modalities in an attempt to regenerate bone, gingiva, periodontal ligament and cementum. One of the newly accepted trends in regenerative therapy is the use of platelet concentrates such as platelet rich fibrin, plasma rich in growth factor which act as biological scaffold, fillers as well a vehicle along with bone grafts. Platelet concentrates have been found to be rich in growth factors and are used in the field of periodontology as an additive to bone grafting in sites of bony defects as a potential filler material. We wanted to evaluate the relation between the volume of blood extracted and weight of corresponding platelet rich fibrin and plasma rich in growth factor, and correlation of weight of platelet rich fibrin and plasma rich in growth factor with age, gender and blood parameters. MethodsA sample of 36 systemically healthy patients was randomly selected from the outpatient department of a dental college in Chennai. They were matched for age, gender and distributed into two broad groups: one for PRF and the other for PRGF comprising 9 females and 9 males in each group. A routine complete blood count including red blood cell count, white blood cell count and platelet count and haemoglobin were determined. ResultsThere was no relation between the weight of platelet rich fibrin and plasma rich in growth factor and the gender or age of the patient. There was also no apparent correlation between the platelet count and the platelet weight obtained. In some patients despite high platelet concentration, substantial PRF or PRGF weight was not obtained. ConclusionsWithin the limits of this study, it was found that the quantity of PRF and PRGF obtained is independent of age, and gender with no direct relation between the RBC count, WBC count, and haemoglobin.

Cierre de comunicación oroantral mediante el uso de membrana de plasma: revisión de la literatura y reporte de un caso clínico / Closure of oroantral communication using a plasma membrane: review of the literature and report of a clinical case

Una comunicación oroantral es el espacio creado entre el seno maxilar y la cavidad oral, si ésta no es tratada a tiempo puede desencadenar una fístula e inclusive la presencia de sinusitis crónica. La comunicación oroantral es una de las complicaciones con mayor prevalencia que puede presentarse durante los procedimientos quirúrgicos cercanos a la zona donde se vea involucrado el seno maxilar. Con mayor incidencia encontramos los primeros molares, seguidos de los segundos molares y por último los terceros molares. El manejo convencional de una comunicación oroantral va desde su cierre espontáneo hasta el manejo quirúrgico; esto dependerá del tamaño de la lesión y el tiempo transcurrido de ésta. El caso clínico se trata de un paciente de 42 años de edad con antecedente de extracción del O.D. 16 por facultativo particular, desarrollando posteriormente un cuadro de sinusitis, por lo que acude al Servicio de Urgencias del Hospital Regional 1o de Octubre, I.S.S.S.T.E. en la CDMX, siendo valorado por nuestro servicio, donde se observa una comunicación franca entre la cavidad bucal y el seno maxilar, realizándose cierre de la misma con una membrana de plasma rico en factores de crecimiento plaquetario (AU)

Oroantral communication is the space created between the maxillary sinus and the oral cavity, if the communication is not treated on time, it would progress to oroantral fi stula or chronic sinus disease. An oroantral communication is the most common complication during surgical procedures closer to the maxillary sinus. With greater incidence we found sites of upper fi rst molar, followed by the second molar and fi nally third molars. The conventional handling of an oroantral communication goes between spontaneously closure or surgical closure management, it will depend in the size of the lesion and the time elapsed. The present article shows a clinical case, is a male patient of 42 years old with a previous extraction of tooth 16, by a private doctor, later developing a picture of sinusitis. Then he goes to the emergency department of the Hospital 1o of October, ISSSTE in the CDMX, being evaluated by our service, where there is a frank communication between the oral cavity and the maxillary sinus, closing it with a plasma membrane rich in growth factors (AU)

Evaluation del cierre apical con hidróxido de calcio, MTA y plasma rico en factores de crecimiento in vivo / Evaluation of the apical closing with calcium hydroxide, MTA and PRGF

Objetivo. Observar la formación de un tope apical mediante el empleo de Ca(OH)2, MTA y PRGF colocado en dientes inmaduros de perros a un solo período de observación. Metodología. Fueron utilizados dos perros en los cuales se trabajó con 16 muestras. Este trabajo se realizó en dos tiempos operatorios, el primero para impedir el desarrollo normal del ápice radicular provocando una lesión apical colocando una torunda de algodón con placa dentobacteriana de humano durante dos meses, el segundo tiempo operatorio para colocar los materiales a probar formando cuatro grupos: 1. control (limpieza del conducto); 2. hidróxido de calcio (Ca(OH)2); 3. mineral trióxido agregado (MTA); 4. plasma rico en factores de crecimiento (PRGF). Siete meses después, los perros fueron sacrificados y las muestras preparadas para ser observadas al microscopio óptico. Resultados. Los resultados obtenidos fueron muy similares entre las muestras de su propio grupo. Grupo control: el ápice se encontró totalmente abierto y sin vías de reparación. Grupo del hidróxido de calcio: el ápice se encontró abierto pero en vías de reparación, formando un tejido de osteocemento o de tipo cementoide, pequeños focos de infiltrado inflamatorio. Mineral trióxido agregado: se observó un cierre total del ápice, con dentina bien organizada y con engrosamiento del cemento en la porción apical. Plasma rico en factores de crecimiento: ápice abierto en vías de reparación, tejido cementoide o de tipo osteocemento. Dentro de todo el conducto se observan fibras de colágeno, tejido conectivo laxo yalgunos vasos sanguíneos. Conclusiones. Con base a los resultados observados, sobresalen dos de los materiales utilizados, estos son el MTA por el cierre apical tan similar a la fisiología natural, y PRGF por el tejido formado dentro del conducto radicular; sin embargo el hidróxido de calcio también logra estimular la formación de tejido calcificado periapical

The objective of this work was to observe the formation of an apical top by means of the use of Ca(OH)2, MTA and PRGF placed in immature teeth of dogs to a single period of observation. Two dogs were used, in which 16 samples were worked. This work was made in two operating times, first to prevent the normal development of the apex, causing an injury placing a short portion of cotton with dentobacterian plaque of human during two months. In the second operating time the teeth were divided into four groups according to the materials to prove: 1. Control cleaning of the canal; 2. Calcium Hydroxide - Ca(OH)2; 3. Mineral Aggregate Trioxide; 4. Blood Plasma Rich in growth factors (PRGF). Seven months later, the dogs were sacrificed and samples were prepared to be observed in optical microscope. The obtained results were very similar among the samples of their own group. Control Group: the apex was totally open, without repair. Group of Ca(OH)2: the apex was open but on the way to repair, forming a weave of hard tissue, small centers of inflammatory infiltrate. MTA group: a total closing of the apex was observed, with organized affluent dentine, and thickening of cement in the apical portion. Plasma Rich in Growth Factors Group: apex opened on the way to repair, cement weave or a type of osteocement was present. Within all the canal, collagen fibers and connective tissue weave were observed and some blood vessels. Based on the observed results, they excel two of the used materials, these are the MTA similar to the natural physiology while PRGF by the weave formed within the root canal; nevertheless the Calcium Hydroxide also stimulates the calcified weave apical formation.