Influence of the Interimplant Distance on Crestal Bone Resorption and Bone Density: A Histomorphometric Study in Dogs

Papalexiou, Vula; Novaes, Arthur B.; Ribeiro, Ricardo Faria; Múglia, Valdir Antônio; Oliveira, Rafaël R. de

doi:10.1902/jop.2006.050172

Cited by 20 publications

(33 citation statements)

References 18 publications

(51 reference statements)

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“…Studies have been conducted in recent years with the aim of establishing the ideal treatment plan for implants placed in the esthetic zones, with special attention to the position of the contact point in relation to the bone crest and the interimplant distance. According to the results of the present study, when the contact point of restored contiguous implants is placed 3 mm above the bone crest, the interdental papilla formation achieved better indexes when compared with previous studies using the same animal model 6,7 ; in reality, the embrasures were almost closed with soft tissue, and there is some possibility to get the total fill if longer healing periods had been used. Moreover, no significant differences between the interimplant distance of 2 and 3 mm were obtained in relation to papilla formation and crestal bone resorption with the nonsubmerged protocol with Morse cone connection implants with platform switching or shifting.…”

Section: Discussionsupporting

confidence: 42%

“…The establishment of a biological seal around implants is considered an important natural phenomenon, but it has also been theoretically linked to bone remodeling. 1,3,4 Recent studies in dogs [5][6][7] suggested that the distance between the contact point and crestal bone tip should be about 3 mm, to compensate for the crestal bone resorption that occurs around adjacent implants. However, other factors can contribute to the crestal bone resorption, such as the anatomy of the cervical region and surface treatment of the implants, the type of connection between implant and prosthetic component, the implant positioning in relation to the crestal bone, and the distance between contiguous implants, to name a few.…”

Section: Introductionmentioning

confidence: 99%

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Influence of Interimplant Distances and Placement Depth on Papilla Formation and Crestal Resorption: A Clinical and Radiographic Study in Dogs

Novaes¹,

Barros²,

Múglia³

et al. 2009

Journal of Oral Implantology

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Among the factors that contribute to the papilla formation and crestal bone preservation between contiguous implants, this animal study clinically and radiographically evaluated the interimplant distances (IDs) of 2 and 3 mm and the placement depths of Morse cone connection implants restored with platform switch. Bilateral mandibular premolars of 6 dogs were extracted, and after 12 weeks, the implants were placed. Four experimental groups were constituted: subcrestally with ID of 2 mm (2 SCL) and 3 mm (3 SCL) and crestally with ID of 2 mm (2 CL) and 3 mm (3 CL). Metallic crowns were immediately installed with a distance of 3 mm between the contact point and the bone crest. Eight weeks later, clinical measurements were performed to evaluate papilla formation, and radiographic images were taken to analyze the crestal bone remodeling. The subcrestal groups achieved better levels of papillae formation when compared with the crestal groups, with a significant difference between the 3 SCL and 3 CL groups (P = .026). Radiographically, the crestal bone preservation was also better in the subcrestal groups, with statistically significant differences between the 2SCL and 2CL groups (P = .002) and between the 3SCL and 3CL groups (P = .008). With the present conditions, it could be concluded that subcrestal implant placement had a positive impact on papilla formation and crestal bone preservation, which could favor the esthetic of anterior regions. However, the IDs of 2 and 3 mm did not show significantly different results.

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Section: Discussionsupporting

confidence: 42%

Section: Introductionmentioning

confidence: 99%

Influence of Interimplant Distances and Placement Depth on Papilla Formation and Crestal Resorption: A Clinical and Radiographic Study in Dogs

Novaes¹,

Barros²,

Múglia³

et al. 2009

Journal of Oral Implantology

Self Cite

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“…The authors suggested the use of implants with smaller diameters to improve aesthetics in multiple implants, especially in the anterior region 11 . Novaes and colleagues 12 analyzed, clinically and radiographically, in dogs, the amount of crestal resorption and absence/presence of the papilla between contiguous implants with 2‐ or 3‐mm interimplant distances and a contact point to bone crest distance of 5 mm, and Papalexiou and colleagues 13 evaluated the same parameters histomorphometrically. It was concluded that there was not a complete fill of the interimplant spaces by the papilla in any of the groups and that both groups showed similar papilla formation and crestal bone resorption.…”

Section: Introductionmentioning

confidence: 99%

Influence of Interimplant Distance on Bone Microstructure: A Histomorphometric Study in Dogs

Traini

Novaes

Papalexiou

et al. 2008

Clin Implant Dent Rel Res

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The microstructure of the crestal alveolar bone is important for both the maintenance of osseointegration and the location of the gingival soft tissues. The aim of this study was to evaluate and compare the bone microstructure of the alveolar bone and of the interimplant bone in implants inserted at different interimplant distances. The mandibular bilateral premolars of six dogs were extracted, and after 12 weeks, each dog received eight implants, for a total of 48 implants. Two pairs of implants, one for each hemiarch, were separated by 2 mm (group 1) and by 3 mm (group 2). After 12 weeks, the implants received temporary acrylic prostheses. After four more weeks, metallic crowns substituted the temporary prostheses. After an additional 8 weeks the animals were sacrificed and the hemimandibles were removed, dissected, and processed. The longitudinal collagen fiber orientation was 43.2% for the alveolar bone; it was 30.3% for the 2-mm group and 43.9% for the 3-mm group. There was a statistically significant difference between the 2-mm and 3-mm groups (p < .05). The orientation of transverse collagen fibers was 47.8% for the alveolar bone; it was 37.3% for the 2-mm group and 56.3% for the 3-mm group. There was a statistically significant difference between the 2-mm and 3-mm groups (p < .05). The marrow spaces were 34.87% for the alveolar bone, 52.3% for the 2-mm group, and 59.9% for the 3-mm group. There was a statistically significant difference between the alveolar bone and the 3-mm group (p < .05). The low mineral density index was 36.29 for the alveolar bone, 46.76 for the 2-mm group, and 17.91 for the 3-mm group. There was a statistically significant difference between the 2-mm and 3-mm groups (p < .05). The high mineral density was 87.57 for the alveolar bone, 72.58 for the 2-mm group, and 84.91 for the 3-mm group. There was a statistically significant difference between the alveolar bone and the 2-mm group (p < .05). The collagen fiber orientation resulted in statistically significant differences in both the 2-mm and 3-mm groups compared with the alveolar bone. The marrow spaces appeared significantly increased in the 3-mm group compared with the alveolar bone. The low mineral density index was significantly higher in the 2-mm group, while the high mineral density index was significantly higher in the alveolar bone. In conclusion, the interimplant distance should not be less than 3 mm.

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“…This finding is consistent with our previous study. 25 The location of the contact area is associated with the location of interdental crestal bone, 26 periodontal breakdown of the interproximal gingival col, 27 interdental black triangles, 28 and malaligned teeth. 29 The vertical position of the contact area provides a guideline for interproximal reduction procedures.…”

Section: Discussionmentioning

confidence: 99%

Pattern of maxillary and mandibular proximal enamel thickness at the contact area of the permanent dentition from first molar to first molar

Sarig

Vardimon

Sussan

et al. 2015

American Journal of Orthodontics and Dentofacial Orthopedics

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Influence of the Interimplant Distance on Crestal Bone Resorption and Bone Density: A Histomorphometric Study in Dogs

Abstract: The distances of 2 and 3 mm between implants do not result in statistically significant differences in crestal bone resorption around implant surfaces in dogs. The bone density is enhanced when loading is present at the interimplant area.

Cited by 20 publications

References 18 publications

Influence of Interimplant Distances and Placement Depth on Papilla Formation and Crestal Resorption: A Clinical and Radiographic Study in Dogs

Influence of Interimplant Distances and Placement Depth on Papilla Formation and Crestal Resorption: A Clinical and Radiographic Study in Dogs

Influence of Interimplant Distance on Bone Microstructure: A Histomorphometric Study in Dogs

Pattern of maxillary and mandibular proximal enamel thickness at the contact area of the permanent dentition from first molar to first molar

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