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A prospective study on ultra-wide diameter dental implants for immediate molar replacement

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Abstract
Background: Although wide diameter implants are well documented, little is known about ultra-wide diameter implants (>6 mm). This study evaluates the clinical outcome of ultra-wide diameter implants, placed in molar extraction sockets. Materials and Methods: Ultra-wide diameter implants (7-9 mm) were placed immediately after molar extraction in a 1-stage protocol, without raising a flap or using any bone grafts. After 4 months, the implant was loaded with a single screw-retained crown. Bone loss was evaluated using peri-apical radiographs. Plaque and bleeding were recorded. Crown and papilla dimensions were measured and compared with the contra-lateral tooth. Results: Fifty-one patients (36 male and 15 female), mean ages 61 years old, were treated with 26 implants in the maxilla and 25 implants in the mandible. The majority had a thick (#19) or medium (#31) biotype. After a mean-follow-up period of 23 months, the mean bone level was located 1.16 mm apical of the implant-abutment junction (SD 0.42, range 0.00-2.45) while the actual bone remodeling associated with socket healing resulted in a mean coronal movement of the bone level of 0.15 mm. The mean insertion torque was 116 Ncm (SD 53, range 10-250). There were no differences in papilla height (P = .55), crown length (P = .32), zenith (P = .84), and bucco-palatal dimensions (P = .38). There was a significant difference in the mesio-distal dimension (P = .01). Mean probing depth was 2.59 mm at the implant and 2.23 mm at the contra-lateral tooth (P = .001). There was significantly more plaque at the tooth compared to the implant (P = .01), but there was no significant difference in terms of bleeding on probing (P = .08). Patient satisfaction was high with 72.5% of the patients experiencing no problems at all. Conclusions: Ultra-wide diameter implants have a predictable outcome, demonstrating very little bone loss. Papilla and crown dimensions were comparable to the contra-lateral natural tooth.
Keywords
dental implant, immediate placement, ultra-wide, SINUS FLOOR ELEVATION, SOFT-TISSUE THICKNESS, HIGH INSERTION TORQUE, PRIMARY STABILITY, MAXILLARY SINUS, VOLUMETRIC CHANGES, SINGLE IMPLANTS, 6 MM, BONE, PLACEMENT

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MLA
Hattingh, André et al. “A Prospective Study on Ultra-wide Diameter Dental Implants for Immediate Molar Replacement.” CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH 20.6 (2018): 1009–1015. Print.
APA
Hattingh, A., Hommez, G., De Bruyn, H., Huyghe, M., & Vandeweghe, S. (2018). A prospective study on ultra-wide diameter dental implants for immediate molar replacement. CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH, 20(6), 1009–1015.
Chicago author-date
Hattingh, André, Geert Hommez, Hugo De Bruyn, Marie Huyghe, and Stefan Vandeweghe. 2018. “A Prospective Study on Ultra-wide Diameter Dental Implants for Immediate Molar Replacement.” Clinical Implant Dentistry and Related Research 20 (6): 1009–1015.
Chicago author-date (all authors)
Hattingh, André, Geert Hommez, Hugo De Bruyn, Marie Huyghe, and Stefan Vandeweghe. 2018. “A Prospective Study on Ultra-wide Diameter Dental Implants for Immediate Molar Replacement.” Clinical Implant Dentistry and Related Research 20 (6): 1009–1015.
Vancouver
1.
Hattingh A, Hommez G, De Bruyn H, Huyghe M, Vandeweghe S. A prospective study on ultra-wide diameter dental implants for immediate molar replacement. CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH. 2018;20(6):1009–15.
IEEE
[1]
A. Hattingh, G. Hommez, H. De Bruyn, M. Huyghe, and S. Vandeweghe, “A prospective study on ultra-wide diameter dental implants for immediate molar replacement,” CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH, vol. 20, no. 6, pp. 1009–1015, 2018.
@article{8604013,
  abstract     = {{Background: Although wide diameter implants are well documented, little is known about ultra-wide diameter implants (>6 mm). This study evaluates the clinical outcome of ultra-wide diameter implants, placed in molar extraction sockets. 
Materials and Methods: Ultra-wide diameter implants (7-9 mm) were placed immediately after molar extraction in a 1-stage protocol, without raising a flap or using any bone grafts. After 4 months, the implant was loaded with a single screw-retained crown. Bone loss was evaluated using peri-apical radiographs. Plaque and bleeding were recorded. Crown and papilla dimensions were measured and compared with the contra-lateral tooth. 
Results: Fifty-one patients (36 male and 15 female), mean ages 61 years old, were treated with 26 implants in the maxilla and 25 implants in the mandible. The majority had a thick (#19) or medium (#31) biotype. After a mean-follow-up period of 23 months, the mean bone level was located 1.16 mm apical of the implant-abutment junction (SD 0.42, range 0.00-2.45) while the actual bone remodeling associated with socket healing resulted in a mean coronal movement of the bone level of 0.15 mm. The mean insertion torque was 116 Ncm (SD 53, range 10-250). There were no differences in papilla height (P = .55), crown length (P = .32), zenith (P = .84), and bucco-palatal dimensions (P = .38). There was a significant difference in the mesio-distal dimension (P = .01). Mean probing depth was 2.59 mm at the implant and 2.23 mm at the contra-lateral tooth (P = .001). There was significantly more plaque at the tooth compared to the implant (P = .01), but there was no significant difference in terms of bleeding on probing (P = .08). Patient satisfaction was high with 72.5% of the patients experiencing no problems at all. 
Conclusions: Ultra-wide diameter implants have a predictable outcome, demonstrating very little bone loss. Papilla and crown dimensions were comparable to the contra-lateral natural tooth.}},
  author       = {{Hattingh, André and Hommez, Geert and De Bruyn, Hugo and Huyghe, Marie and Vandeweghe, Stefan}},
  issn         = {{1523-0899}},
  journal      = {{CLINICAL IMPLANT DENTISTRY AND RELATED RESEARCH}},
  keywords     = {{dental implant,immediate placement,ultra-wide,SINUS FLOOR ELEVATION,SOFT-TISSUE THICKNESS,HIGH INSERTION TORQUE,PRIMARY STABILITY,MAXILLARY SINUS,VOLUMETRIC CHANGES,SINGLE IMPLANTS,6 MM,BONE,PLACEMENT}},
  language     = {{eng}},
  number       = {{6}},
  pages        = {{1009--1015}},
  title        = {{A prospective study on ultra-wide diameter dental implants for immediate molar replacement}},
  url          = {{http://dx.doi.org/10.1111/cid.12666}},
  volume       = {{20}},
  year         = {{2018}},
}

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