The preliminary study for three-dimensional alveolar bone morphologic characteristics for alveolar bone restoration

Abstract

Background The concept of the ideal morphology for the alveolar bone form is an important element to reconstruct or restore the in maximizing esthetic profile and functional alveolar bone restoration. The purpose of this preliminary study is to evaluate the normal alveolar bone structure to provide the standard reference and guide template for use in diagnosing for implant placement, determining the correct amount of bone augmentation in actual clinical practice and producing prostheses based on three-dimensional imaging assessment of alveolar bone. Methods This study was included 11 men and 11 women (average age, 22.6 and 24.5 years, respectively) selected from among 127 patients. The horizontal widths of alveolar bone of maxilla and mandible were measured at the crestal, mid-root, and root apex level on MDCT (multi-detector computed tomography) images reconstructed by medical imaging software. In addition, tooth dimensions of the central incisors, canines, second premolars, and first molars of maxilla and mandible, including the horizontal width of the interdental alveolar bone crest, were also measured and statistically analyzed. Results The horizontal alveolar bone width of the palatal side of maxilla showed a distinct increment from the alveolar bone crest to the apical region in both anterior and posterior areas. The average widths of the maxillary alveolar ridge were as follows: central incisor, 7.43 mm; canine, 8.91 mm; second premolar, 9.57 mm; and first molar, 12.38 mm. The average widths of the mandibular alveolar ridge were as follows: central incisor, 6.21 mm; canine, 8.55 mm; second premolar, 8.45 mm; and first molar, 10.02 mm. In the buccal side, the alveolar bone width was not increased from the crest to the apical region. The horizontal alveolar bone width of an apical and mandibular border region was thinner than at the mid-root level. Conclusions The results of the preliminary study are useful as a clinical guideline when determining dental implant diameter and position. And also, these measurements can also be useful during the production of prefabricated membranes and customized alveolar bone scaffolds.

Evaluation of Goose-beak Bone Particles for Dentoalveolar Reconstruction in Dogs

“…The volume and morphology of new bone formed in an alveolar socket can be assessed by examining 3D images that allow discrimination of the area of the socket from the surrounding normal alveolar bone (7,15). In our study, new bone was observed at dentoalveolar sockets after GBP insertion on micro-CT 3D reconstructed images.…”

Comparison of Bone Regeneration in Different Forms of Bovine Bone Scaffolds with Recombinant Human Bone Morphogenetic Protein-2

“…The clinical application of each bone substitute can vary according to defect size, location, and extent. It is also affected by the purpose of the bone graft, the morphology of the recipient bed, and surgeon preference [20]. rhBMP-2 is combined with various forms of scaffolds, including collagen sponges, bone matrix gels, blocks, and particle bones [3,21,22].…”

Avaliação do tecido ósseo alveolar por meio da TCFC, micro-TC e da ressonância magnética

“…As radiografias e tomografias são os métodos mais comuns para a visualização e auxílio no diagnóstico das diferentes condições do tecido ósseo alveolar. Muitos foram os estudos descrevendo as características e a morfologia do osso alveolar em sua forma tridimensional (3D) com as diferentes tomografias computadorizadas (TC) [3,[17][18][19][20].…”

“…Este conceito também se tornou primordial para o campo da engenharia tecidual, responsável pela criação de tecidos artificiais que ajudam restabelecer ou restaurar o perfil estético e funcional em técnicas de cirurgia de enxerto ósseo. A possibilidade de fabricação de modelos tridimensionais de um osso alveolar personalizado tem acelerado a busca por biomateriais que mimetizem sua morfologia e função de forma ideal [3].…”

“…Além disso, os resultados mostraram uma forte concordância existente entre o BV/TV obtido com imagens de RM com o BV/TV obtido com as imagens de micro-TC. Os autores concluíram que o aparelho de 15 T e a bobina construída para as amostras ósseasalveolares, gerando um largo fator de preenchimento (filling factor), permitiram uma alta resolução de imagens para a discriminação do tecido adiposo da medula óssea amarela com um voxel de 59 µm3 . Concluíram também que a relação inversa obtida entre a análise morfométrica BV/TV e o conteúdo de tecido adiposo da medula óssea amarela possibilita uma avaliação indireta da fração de volume ósseo existente, sugerindo a aplicação do estudo em amostras maiores e com aparelhos de diferentes frequências de RM[48].…”