TY - JOUR
T1 - Comparison of peri-implant soft tissue color with the use of pink-neck vs gray implants and abutments based on soft tissue thickness
T2 - A 6-month follow-up study
AU - Bittner, Nurit
AU - Schulze-Späte, Ulrike
AU - Cleber, Silva
AU - Da Silva, John D.
AU - Kim, David M.
AU - Tarnow, Dennis
AU - Ishikawa-Nagai, Shigemi
AU - Gil, Mindy S.
N1 - Publisher Copyright:
© 2020 by Quintessence.
PY - 2019
Y1 - 2019
N2 - Purpose: To compare the optical effects of an immediately placed anodized pink-neck implant and abutment vs a conventional gray implant and abutment in relation to soft tissue thickness 6 months after the restoration was completed. Materials and Methods: Forty patients with a hopeless maxillary anterior tooth received an immediate implant and an immediate provisional or custom healing abutment after flapless extraction. Participants were randomized to receive either a conventional titanium implant (control) or a pink-neck implant (test). All patients then received two identical CAD/CAM titanium abutments (one conventional gray, delivered first, and one anodized to appear pink, delivered 3 weeks after) and a zirconia crown. A spectrophotometer was used to record the color of the peri-implant mucosa and gingiva 3 weeks after delivery of each abutment and 6 months after the final restoration was delivered. The color difference between the two sites was calculated (ΔL*, Δa*, Δb*), and correlations with soft tissue thickness, change in ridge dimension, and implant position were assessed. Results: Irrespective of the randomization group, changing the abutments from gray to pink showed a change in color between the peri-implant mucosa and the natural gingiva. Patients with a thin gingival biotype showed a statistically significant color change (P =.00089) in the a* axis, meaning that the gingiva appeared more pink (Δa*). No significant correlation between the soft tissue color and buccolingual collapse, vertical recession, or implant position was observed in either group. Conclusion: The difference in color observed between the peri-implant mucosa and the gingiva was considerable in all groups. Anodized pink implants and abutments could reduce the difference in the red aspect (Δa*) of the peri-implant mucosa compared to the adjacent gingiva in patients with a thin biotype.
AB - Purpose: To compare the optical effects of an immediately placed anodized pink-neck implant and abutment vs a conventional gray implant and abutment in relation to soft tissue thickness 6 months after the restoration was completed. Materials and Methods: Forty patients with a hopeless maxillary anterior tooth received an immediate implant and an immediate provisional or custom healing abutment after flapless extraction. Participants were randomized to receive either a conventional titanium implant (control) or a pink-neck implant (test). All patients then received two identical CAD/CAM titanium abutments (one conventional gray, delivered first, and one anodized to appear pink, delivered 3 weeks after) and a zirconia crown. A spectrophotometer was used to record the color of the peri-implant mucosa and gingiva 3 weeks after delivery of each abutment and 6 months after the final restoration was delivered. The color difference between the two sites was calculated (ΔL*, Δa*, Δb*), and correlations with soft tissue thickness, change in ridge dimension, and implant position were assessed. Results: Irrespective of the randomization group, changing the abutments from gray to pink showed a change in color between the peri-implant mucosa and the natural gingiva. Patients with a thin gingival biotype showed a statistically significant color change (P =.00089) in the a* axis, meaning that the gingiva appeared more pink (Δa*). No significant correlation between the soft tissue color and buccolingual collapse, vertical recession, or implant position was observed in either group. Conclusion: The difference in color observed between the peri-implant mucosa and the gingiva was considerable in all groups. Anodized pink implants and abutments could reduce the difference in the red aspect (Δa*) of the peri-implant mucosa compared to the adjacent gingiva in patients with a thin biotype.
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U2 - 10.11607/ijp.6205
DO - 10.11607/ijp.6205
M3 - Article
C2 - 31860911
AN - SCOPUS:85076968952
SN - 0893-2174
VL - 33
SP - 29
EP - 38
JO - International Journal of Prosthodontics
JF - International Journal of Prosthodontics
IS - 1
ER -