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Zygoma implant-supported midfacial prosthetic rehabilitation: a 4-year follow-up study including assessment of quality of life.
Clin Oral Implants Res 2005; 16(3):313-25CO

Abstract

OBJECTIVE

Successful prosthetic rehabilitation is crucial for quality of life in cases of large maxillary defects when surgical reconstruction is not advisable because of general health or patient refusal. For this purpose, the extended indications for Zygomaticus fixtures in different defect types were evaluated.

PATIENTS AND METHODS

Twelve patients received 28 zygoma implants and 23 dental implants (if a segment of alveolar process was available) and were followed-up 14-53 months. Zygoma implants were positioned classically in the maxillary molar region and to reduce leverage, a premolar and a canine position was developed. The quality of life was assessed by a validated questionnaire after complete rehabilitation.

RESULTS

Cumulative zygoma implant survival was 82%. Three losses occurred because of persistent infection and gradual loosening. Lost implants were immediately replaced in adjacent bone. Insufficient implant length within soft tissue reconstructions was prone to chronic infection by pocketing and recurrent overgrowth of granulating tissue. Longer implants were free of soft tissue inhibition, yet prone to overloading and high leverage in cases when no anterior alveolar process and dental implants were present. Zygoma implant success was therefore 71%, including the new premolar and canine Zygomaticus fixture-position. Periotest values increased from 0 to +7 to the fourth year, peri-implant bleeding and plaque index were decreasing from 56% to 0% and 33% to 0%, respectively, and good general quality of life with the priorities on chewing and activity was noted.

CONCLUSION

Zygoma implants can reliably anchor the midfacial maxillary prostheses and enable a quality of life comparable with autologous maxillary reconstruction. They can be replaced immediately if local infection or loosening should occur. A premolar and canine position reduce leverage when no anterior alveolar process is present. The patient can alternatively be provided with dental implants.

Authors+Show Affiliations

Maxillofacial and Plastic Facial Surgery, The J.-W. Goethe University Medical Centre Frankfurt, Theodor-Stern-Kai 7, 60596 Frankfurt am Main, Germany. c.landes@lycos.com

Pub Type(s)

Evaluation Studies
Journal Article

Language

eng

PubMed ID

15877752

Citation

Landes, Constantin Alexander. "Zygoma Implant-supported Midfacial Prosthetic Rehabilitation: a 4-year Follow-up Study Including Assessment of Quality of Life." Clinical Oral Implants Research, vol. 16, no. 3, 2005, pp. 313-25.
Landes CA. Zygoma implant-supported midfacial prosthetic rehabilitation: a 4-year follow-up study including assessment of quality of life. Clin Oral Implants Res. 2005;16(3):313-25.
Landes, C. A. (2005). Zygoma implant-supported midfacial prosthetic rehabilitation: a 4-year follow-up study including assessment of quality of life. Clinical Oral Implants Research, 16(3), pp. 313-25.
Landes CA. Zygoma Implant-supported Midfacial Prosthetic Rehabilitation: a 4-year Follow-up Study Including Assessment of Quality of Life. Clin Oral Implants Res. 2005;16(3):313-25. PubMed PMID: 15877752.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Zygoma implant-supported midfacial prosthetic rehabilitation: a 4-year follow-up study including assessment of quality of life. A1 - Landes,Constantin Alexander, PY - 2005/5/10/pubmed PY - 2005/9/30/medline PY - 2005/5/10/entrez SP - 313 EP - 25 JF - Clinical oral implants research JO - Clin Oral Implants Res VL - 16 IS - 3 N2 - OBJECTIVE: Successful prosthetic rehabilitation is crucial for quality of life in cases of large maxillary defects when surgical reconstruction is not advisable because of general health or patient refusal. For this purpose, the extended indications for Zygomaticus fixtures in different defect types were evaluated. PATIENTS AND METHODS: Twelve patients received 28 zygoma implants and 23 dental implants (if a segment of alveolar process was available) and were followed-up 14-53 months. Zygoma implants were positioned classically in the maxillary molar region and to reduce leverage, a premolar and a canine position was developed. The quality of life was assessed by a validated questionnaire after complete rehabilitation. RESULTS: Cumulative zygoma implant survival was 82%. Three losses occurred because of persistent infection and gradual loosening. Lost implants were immediately replaced in adjacent bone. Insufficient implant length within soft tissue reconstructions was prone to chronic infection by pocketing and recurrent overgrowth of granulating tissue. Longer implants were free of soft tissue inhibition, yet prone to overloading and high leverage in cases when no anterior alveolar process and dental implants were present. Zygoma implant success was therefore 71%, including the new premolar and canine Zygomaticus fixture-position. Periotest values increased from 0 to +7 to the fourth year, peri-implant bleeding and plaque index were decreasing from 56% to 0% and 33% to 0%, respectively, and good general quality of life with the priorities on chewing and activity was noted. CONCLUSION: Zygoma implants can reliably anchor the midfacial maxillary prostheses and enable a quality of life comparable with autologous maxillary reconstruction. They can be replaced immediately if local infection or loosening should occur. A premolar and canine position reduce leverage when no anterior alveolar process is present. The patient can alternatively be provided with dental implants. SN - 0905-7161 UR - https://www.unboundmedicine.com/medline/citation/15877752/Zygoma_implant_supported_midfacial_prosthetic_rehabilitation:_a_4_year_follow_up_study_including_assessment_of_quality_of_life_ L2 - https://doi.org/10.1111/j.1600-0501.2005.01096.x DB - PRIME DP - Unbound Medicine ER -