O079: The influence of peri-implant keratinized mucosa on marginal bone level, peri-implant tissues health and brushing discomfort: a 4-year follow-up study

Abstract Background To evaluate a cross-shaped incision technique for thick-gingiva and thin-gingiva patients treated with implant-supported fixed prosthesis. Methods Total 55 patients receiving cross-shaped incision were assigned into thick-gingiva group (29 cases) and thin-gingiva group (26 cases). Follow-up was performed at 3 and 12-month after final restoration. Results Mesial and distal papilla height was significantly greater in thick-gingiva group than thin-gingiva group at 3 and 12 months, while periodontal depth and crestal marginal bone level around implant had no significant difference between the two groups during follow-up. No case of recession of buccal marginal gingiva was observed in thick-gingiva group. However, the recession of marginal gingiva of buccal aspect of the crown was found in 5 patients (19.2%) with thin-gingiva. Conclusions The cross-shaped incision may be applied to reconstruct gingival papillae and avoid the gingival recession in patients with thick-gingiva phenotype. Trial registration This study was registered at ClinicalTrials.gov (registration number NCT04706078, date 12 January 2021, Retrospectively registered).

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Five Degree Internal Conical Connection and Marginal Bone Stability around Subcrestal Implants: A Retrospective Analysis

Materials ◽

10.3390/ma13143123 ◽

2020 ◽

Vol 13 (14) ◽

pp. 3123

Author(s):

Diego Lops ◽

Michele Stocchero ◽

Jason Motta Jones ◽

Alessandro Freni ◽

Antonino Palazzolo ◽

...

Keyword(s):

Clinical Evidence ◽

Multiple Regression Model ◽

Vertical Position ◽

Limited Information ◽

Conical Connection ◽

Bone Level ◽

Platform Switching ◽

Marginal Bone Level

Background: There is limited information on the effect of the connection between subcrestally placed implants and abutments on marginal bone levels. The aim of the present retrospective study was to evaluate marginal bone levels after definitive prosthesis delivery around implants with an internal 5° conical connection placed in a subcrestal position. Materials and methods: Patients treated with fixed prostheses supported by implants placed at a subcrestal level between 2012 and 2018 were recalled for a follow-up examination. All implants had 5° internal conical connection with platform switching. Radiographic marginal bone level (MBL) was measured. MBL change between prosthetic delivery (t0) and follow-up examination (t1) was calculated. A multiple regression model was performed to identify the most significant predictors on MBL change. Results: Ninety-three patients and 410 implants, with a mean follow-up of 2.72 ± 1.31 years, were examined. Mean MBL was −1.09 ± 0.65 mm and −1.00 ± 0.37 mm at t0 and t1, respectively, with a mean bone remodeling of 0.09 ± 0.68 mm. An implant’s vertical position in relation to the bone crest, the year of follow up and the presence of type-2 controlled diabetes were demonstrated to be influencing factors for MBL modifications. Conclusions: Subcrestally placed implants with platform switching and internal conical connection maintained stable bone levels over a mean follow-up of more than 2 years. How a tight internal conical connection between abutment and implant may contribute to this clinical evidence should be more deeply investigated. MBL variations seem to be mostly influenced by an implant’s vertical position and presence of type-2 controlled diabetes.

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Marginal bone level changes and implant stability after loading are not influenced by baseline microstructural bone characteristics: 1-year follow-up

Clinical Oral Implants Research ◽

10.1111/clr.12728 ◽

2015 ◽

Vol 27 (10) ◽

pp. 1212-1220 ◽

Cited By ~ 5

Author(s):

Danilo Rocha Dias ◽

Cláudio Rodrigues Leles ◽

Christina Lindh ◽

Rejane Faria Ribeiro-Rotta

Keyword(s):

Implant Stability ◽

Bone Level ◽

Marginal Bone Level

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Effect of Opposite Tooth Condition on Marginal Bone Loss around Submerged Dental Implants: A Retrospective Study with a 3-Year Follow-Up

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph182010715 ◽

2021 ◽

Vol 18 (20) ◽

pp. 10715

Author(s):

Odontuya Dorj ◽

Hsi-Kuei Lin ◽

Eisner Salamanca ◽

Yu-Hwa Pan ◽

Yi-Fan Wu ◽

...

Keyword(s):

Retrospective Study ◽

Bone Loss ◽

Dental Implants ◽

Marginal Bone Loss ◽

Bone Level ◽

Natural Teeth ◽

Marginal Bone Level

Background: The objective of this study was to evaluate the effects of opposite tooth conditions on change in marginal bone level (MBL) around submerged dental implants. Materials and methods: The study included healthy patients with one or two implants. Structures opposite implants were either natural teeth (NT) or fixed restorations (FRs). MBLs were measured on digital periapical radiographs at the mesial and distal aspects of each implant. Results: Sixty implants were inserted by the 3-year follow-up. Mean MBLs for NT were 0.21 ± 0.33 mm before prosthetic loading and 0.30 ± 0.41 mm 3 years later (p = 0.001). Mean MBLs with FRs were 0.36 ± 0.45 mm before loading and 0.53 ± 0.50 mm 3 years later (p < 0.001). Changes in mean MBL from the 6-month follow-up to the 1- and 3-year follow-ups were statistically significant (p < 0.01) for implants opposite NT. However, changes in mean MBL from the 6-month follow-up to the 1-year (p = 0.161) and 3-year follow-ups (p = 1.000) were not significant for implants opposite FRs. Between baseline and the 3-year follow-up, MBL change was relatively small and did not differ regarding NT and FRs. Conclusion: Bone loss was greater if submerged dental implants were opposed by FRs. MBLs around submerged implants continued to change after 3 years if NT opposed implants.

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Influence of the keratinized mucosa on the stability of peri-implant tissues and brushing discomfort: A 4-year follow-up study

Clinical Oral Implants Research ◽

10.1111/clr.13381 ◽

2018 ◽

Vol 29 (12) ◽

pp. 1177-1185 ◽

Cited By ~ 30

Author(s):

Jeniffer Perussolo ◽

André B. Souza ◽

Flávia Matarazzo ◽

Ricardo P. Oliveira ◽

Mauricio G. Araújo

Keyword(s):

Follow Up Study ◽

The Stability ◽

Keratinized Mucosa

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Marginal Bone Loss around Implants with Internal Hexagonal and Internal Conical Connections: A 12-Month Randomized Pilot Study

Journal of Clinical Medicine ◽

10.3390/jcm10225427 ◽

2021 ◽

Vol 10 (22) ◽

pp. 5427

Author(s):

Pablo Galindo-Moreno ◽

Ada Concha-Jeronimo ◽

Lucia Lopez-Chaichio ◽

Roque Rodriguez-Alvarez ◽

Elena Sanchez-Fernandez ◽

...

Keyword(s):

Bone Loss ◽

Outcome Variable ◽

Marginal Bone Loss ◽

Keratinized Tissue ◽

Radiographic Measurements ◽

Bone Level ◽

Main Outcome Variable ◽

Marginal Bone Level ◽

Implant Prosthesis

The aim of this study was to analyze the differences in terms of the marginal bone level (MBL) around implants with either an internal conical or an internal hexagonal implant–prosthesis connection. A randomized clinical trial included patients in need of a single implant-supported restoration. The implant–prosthesis connection was either internal conical or internal hexagonal while maintaining the same type of implant macro- and microarchitecture. Clinical and radiographical variables were registered up to 12 months of follow-up, including MBL. A total of 30 patients were included in the study. The main outcome variable, MBL 12 months after prosthesis delivery, was statistically different in both groups: −0.25 (0.12) vs. −0.70 (0.43) (conical vs. hexagonal; p = 0.033). Differences were also observed at the 3- and 6-month follow-up visits as well as for the MBL change from prosthesis delivery to the 12-month follow-up (−0.15 (0.13) vs. −0.56 (0.44); conical vs. hexagonal; p = 0.023). Correlations between MBL around the implants and radiographic measurements on the adjacent teeth, buccal bone to implant, tissue thickness or keratinized tissue were not significant neither globally nor when analyzed independently by group. In view of such results, it can be concluded that single-unit restorations with internal hexagonal-connection implants induce higher marginal bone loss after 12 months of follow-up from prosthesis delivery than internal conical-connection implants.

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Influence of Abutment Height on Maintenance of Peri-implant Crestal Bone at Bone-Level Implants: A 3-Year Follow-up Study

The International Journal of Periodontics & Restorative Dentistry ◽

10.11607/prd.2762 ◽

2017 ◽

Vol 37 (5) ◽

pp. 721-727 ◽

Cited By ~ 10

Author(s):

Lourdes Nóvoa ◽

Pilar Batalla ◽

Leticia Caneiro ◽

Alexandre Pico ◽

Antonio Liñares ◽

...

Keyword(s):

Follow Up Study ◽

Bone Level

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Radiographic Assessment of Peri-implant Bone Level – A Comparative Study of Digital Intraoral and Digital Panoramic Radiography

Stomatoloski glasnik Srbije ◽

10.1515/sdj-2015-0012 ◽

2015 ◽

Vol 62 (3) ◽

pp. 117-121

Author(s):

Ishita Gupta ◽

Astha Chaudhry ◽

Solanki Savita ◽

Arvind Shetti

Keyword(s):

Panoramic Radiography ◽

Observer Agreement ◽

Kappa Statistics ◽

Agreement Rate ◽

Panoramic Radiographs ◽

Observer Reliability ◽

Digital Panoramic Radiography ◽

Bone Level ◽

Marginal Bone Level

Abstract Introduction The objective of this study was to compare two radiographic methods - digital intraoral and digital panoramic radiography in assessing marginal bone level around dental implants. The study also evaluated inter-observer and intra-observer reliability during repeated assessments. Material and Methods Marginal bone around 29 implants in 17 patients was assessed using standardized digital intraoral and digital panoramic radiographs. Two observers evaluated bone level by noting the thread at which marginal bone seemed to be attached at distal and mesial surfaces of the implants. The assessments were repeated after one week. Kappa statistics was used to evaluate agreement between assessments, observers, and radiographical methods. Results The agreement rate between digital intraoral and digital panoramic radiography was fair. Intra-observer agreement was very good, while inter-observer agreement was moderate. Conclusion Digital panoramic radiographs can be used to evaluate marginal bone level in patients with multiple implants and also to supplement intraoral radiographs. However, observer variability should be considered when comparing values from follow up studies for implant maintenance.

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