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Horizontal ridge augmentation of a single atrophic site in the anterior maxilla using hydroxyapatite and rhBMP-2 / Augmento óseo horizontal de reborde alveolar en sitio atrófico único en maxila anterior usando hidroxiapatita y rhBMP-2
Maître, Gustavo; Farias, Daniel; de-Moraes, Eduardo; Sacco, Roberto; Ball, Rebecca; Haidar, Ziyad S; Olate, Sergio.
  • Maître, Gustavo; University of La Frontera. Dental School. Master of Dental Sciences. Temuco. CL
  • Farias, Daniel; Universidad de Los Andes. Santiago. CL
  • de-Moraes, Eduardo; s.af
  • Sacco, Roberto; Barts and the London School of Medicine and Dentistry. Oral Surgery Department. London. GB
  • Ball, Rebecca; Kings College Hospital. Oral Surgery Department. London. GB
  • Haidar, Ziyad S; Universidad de Los Andes. Facultad de Odontología. BioMATX. Santiago. CL
  • Olate, Sergio; University of La Frontera. Dental School & Center of Excellence in Morphological and Surgical Studies. Division of Oral, Facial and Maxillofacial Surgery. Temuco. CL
Int. j. morphol ; 38(5): 1426-1433, oct. 2020. graf
Article in English | LILACS | ID: biblio-1134459
ABSTRACT

SUMMARY:

Bone morphogenetic protein (rhBMP-2) is a powerful osteo-inductive growth factor widely used in bone reconstruction and both the vehicle used to administer it and the scaffold substrate could determine its success in clinical situations. The aim was to analyse the clinical behaviour of dental implants placed in single alveolar ridges with a horizontal deficiency in the maxillary anterior region that were reconstructed horizontally with rhBMP-2 and porous hydroxyapatite (HA). Inclusion criteria were both males and females, between the ages of 18 and 29 with single tooth loss of one upper incisor. Cone Beam Computed Tomography (CBCT) was used to take measurements prior to bone augmentation and again prior to the implant insertion. Surgery was carried out under local anaesthetic. In the primary procedure, bone substitute was introduced using porous HA and rhBMP-2; after 4 to 5 months, dental implant surgery was carried out and the implant placed; after 3 months of consolidation the provisional prosthesis was placed and then a definitive restoration was placed. Variables were analysed using the t-test with a p-value of < 0.05 in order to assess statistical significance. Thirteen subjects were included (6 females and 7 males). Bone augmentation resulted in a bone gain of 4.15mm (p=0.023), which was shown to be statistically significant. All of the grafts placed were successful and 13 implants were placed, using torques between 30 and 70N, without complications. For the final prostheses, 11 were screw retained and 2 were cemented in place. The horizontal bone augmentation using HA and rhBMP-2 is an efficient technique for single bone defects in the anterior maxillary area; clinical trials on a larger scale are needed to confirm these results.
RESUMEN
RESUMEN La proteína ósea morfogenética (BMP-2) es un potente osteoinductor utilizado ampliamente en técnicas reconstructivas; el vehículo de instalación es determinante en su evolución. El objetivo fue analizar el comportamiento clínico de implantes dentales instalados en rebordes alveolares únicos con deficiencia horizontal del sector anterior reconstruida horizontalmente con BMP-2 e hidroxiapatita (HA) porosa. Fueron incluidos sujetos de ambos sexos de entre 18 y 29 años, con pérdida dentaria unitaria a nivel de incisivos superiores. Se utilizó tomografía computadorizada para realizar mediciones en las etapas previa a la instalación del injerto y previo a la instalación del implante. Las cirugías fueron realizadas bajo anestesia local. En la primera intervención se realizó la instalación del injerto óseo utilizando HA porosa y BMP-2; después de 4 a 5 meses se realizó la instalación del implante dental; 3 meses después se realizó la conexión protésica y rehabilitación final. Las variables fueron estudiadas con la prueba t test considerando el valor de p< 0,05 para considerar significancia estadística. Trece sujetos fueron incluidos (6 mujeres y 7 hombres); con la reconstrucción ósea se obtuvo una ganancia ósea de 4,15mm (p=0.023) que fue estadísticamente significativo. No existió pérdida en ningún injerto realizado; se instalaron 13 implantes con torques entre 30 y 70N sin complicaciones; se realizaron prótesis fijas atornilladas en 11 casos y cementadas en 2 casos. La técnica con HA y BMP- 2 es eficiente para reconstruir defectos horizontales en perdidas unitarias del sector anterior maxilar; ensayos clínicos de mayor escala son necesarios para confirmar estos resultados.
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Bone Morphogenetic Protein 2 / Alveolar Ridge Augmentation / Hydroxyapatites / Maxilla Type of study: Observational study Limits: Adolescent / Adult / Female / Humans / Male Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2020 Type: Article Affiliation country: Brazil / Chile / United kingdom Institution/Affiliation country: Barts and the London School of Medicine and Dentistry/GB / Kings College Hospital/GB / Universidad de Los Andes/CL / University of La Frontera/CL

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Full text: Available Index: LILACS (Americas) Main subject: Bone Morphogenetic Protein 2 / Alveolar Ridge Augmentation / Hydroxyapatites / Maxilla Type of study: Observational study Limits: Adolescent / Adult / Female / Humans / Male Language: English Journal: Int. j. morphol Journal subject: Anatomy Year: 2020 Type: Article Affiliation country: Brazil / Chile / United kingdom Institution/Affiliation country: Barts and the London School of Medicine and Dentistry/GB / Kings College Hospital/GB / Universidad de Los Andes/CL / University of La Frontera/CL