Dimensional alterations of the facial soft and bone tissues following tooth extraction in the esthetic zone play an essential role to achieve successful outcomes in implant therapy. This prospective study is the first to investigate the interplay between the soft tissue dimensions and the underlying bone anatomy during an 8-wk healing period. The analysis is based on sequential 3-dimensional digital surface model superimpositions of the soft and bone tissues using digital impressions and cone beam computed tomography during an 8-wk healing period. Soft tissue thickness in thin and thick bone phenotypes at extraction was similar, averaging 0.7 mm and 0.8 mm, respectively. Interestingly, thin bone phenotypes revealed a 7-fold increase in soft tissue thickness after an 8-wk healing period, whereas in thick bone phenotypes, the soft tissue dimensions remained unchanged. The observed spontaneous soft tissue thickening in thin bone phenotypes resulted in a vertical soft tissue loss of only 1.6 mm, which concealed the underlying vertical bone resorption of 7.5 mm. Because of spontaneous soft tissue thickening, no significant differences were detected in the total tissue loss between thin and thick bone phenotypes at 2, 4, 6, and 8 wk. More than 51% of these dimensional alterations occurred within 2 wk of healing. Even though the observed spontaneous soft tissue thickening in thin bone phenotypes following tooth extraction conceals the pronounced underlying bone resorption pattern by masking the true bone deficiency, spontaneous soft tissue thickening offers advantages for subsequent bone regeneration and implant therapies in sites with high esthetic demand (Clinicaltrials.gov NCT02403700).
机构:
Boston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USA
Boston Univ, Sch Dent Med, Dept Orthodont, Boston, MA 02118 USABoston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USA
Ai-Aql, Z. S.
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Alagl, A. S.
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King Faisal Univ, Coll Dent, Dept Prevent Dent Sci, Al Khobar 31952, Saudi ArabiaBoston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USA
Alagl, A. S.
;
Graves, D. T.
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Boston Univ, Sch Dent Med, Dept Perodontol & Oral Biol, Boston, MA 02118 USABoston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USA
Graves, D. T.
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Gerstenfeld, L. C.
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Boston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USABoston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USA
Gerstenfeld, L. C.
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Einhorn, T. A.
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Boston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USABoston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USA
机构:
Univ Iowa, Dept Periodont, Iowa City, IA 52242 USAUniv Iowa, Dept Periodont, Iowa City, IA 52242 USA
Avila-Ortiz, G.
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Elangovan, S.
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Univ Iowa, Dept Periodont, Iowa City, IA 52242 USAUniv Iowa, Dept Periodont, Iowa City, IA 52242 USA
Elangovan, S.
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Kramer, K. W. O.
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Univ Iowa, Dows Inst Dent Res, Div Biostat & Res Design, Iowa City, IA USA
Hlth Integr LLC, Easton, MD USAUniv Iowa, Dept Periodont, Iowa City, IA 52242 USA
Kramer, K. W. O.
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Blanchette, D.
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Dawson, D. V.
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Univ Iowa, Dows Inst Dent Res, Div Biostat & Res Design, Iowa City, IA USAUniv Iowa, Dept Periodont, Iowa City, IA 52242 USA
机构:
Boston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USA
Boston Univ, Sch Dent Med, Dept Orthodont, Boston, MA 02118 USABoston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USA
Ai-Aql, Z. S.
;
Alagl, A. S.
论文数: 0引用数: 0
h-index: 0
机构:
King Faisal Univ, Coll Dent, Dept Prevent Dent Sci, Al Khobar 31952, Saudi ArabiaBoston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USA
Alagl, A. S.
;
Graves, D. T.
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h-index: 0
机构:
Boston Univ, Sch Dent Med, Dept Perodontol & Oral Biol, Boston, MA 02118 USABoston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USA
Graves, D. T.
;
Gerstenfeld, L. C.
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h-index: 0
机构:
Boston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USABoston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USA
Gerstenfeld, L. C.
;
Einhorn, T. A.
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h-index: 0
机构:
Boston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USABoston Univ, Med Ctr, Dept Orthopaed Surg, Orthopaed Surg Res Lab, Boston, MA 02118 USA
机构:
Univ Iowa, Dept Periodont, Iowa City, IA 52242 USAUniv Iowa, Dept Periodont, Iowa City, IA 52242 USA
Avila-Ortiz, G.
;
Elangovan, S.
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机构:
Univ Iowa, Dept Periodont, Iowa City, IA 52242 USAUniv Iowa, Dept Periodont, Iowa City, IA 52242 USA
Elangovan, S.
;
Kramer, K. W. O.
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h-index: 0
机构:
Univ Iowa, Dows Inst Dent Res, Div Biostat & Res Design, Iowa City, IA USA
Hlth Integr LLC, Easton, MD USAUniv Iowa, Dept Periodont, Iowa City, IA 52242 USA
Kramer, K. W. O.
;
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Blanchette, D.
;
Dawson, D. V.
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h-index: 0
机构:
Univ Iowa, Dows Inst Dent Res, Div Biostat & Res Design, Iowa City, IA USAUniv Iowa, Dept Periodont, Iowa City, IA 52242 USA