Int J Oral Maxillofac Implants. 2009 Mar-Apr;24(2):335-41.
A retrospective analysis of 110 zygomatic implants in a single-stage immediate loading protocol.
Balshi SF, Wolfinger GJ, Balshi TJ.
CM Ceramics, Mahwah, New Jersey, USA. firstname.lastname@example.org
PURPOSE: This clinical study using a specific technique was carried out to
determine the clinical effectiveness of zygomatic implants under an immediate
loading protocol. MATERIALS AND METHODS: All patients treated between May 2000
and October 2006 who received zygomatic implants were included in this
retrospective analysis. All patients were treated using the same surgical and
restorative protocol. The following data were recorded: gender, age, type of
implant, number of implants placed, dimensions of implants, and implant and
prosthesis survival. RESULTS: Fifty-six consecutive patients (29 women, 27 men;
mean age of 60.58 years [range, 38.78 to 84.01]) were treated. All were in need
of oral reconstruction and had maxillary atrophy that warranted zygomatic implant
placement. One hundred ten zygomatic implants were placed in these 56 patients.
Four of the 110 zygomatic implants failed, resulting in a cumulative survival
rate of 96.37% with follow-up data no less than 9 months and in excess of 5
years. All four failures were turned-surface zygomatic implants. There have been
no failures to date with the titanium anodized-surface zygomatic implants. The
prosthesis survival rate was 100.0%. CONCLUSION: In this retrospective analysis
of 56 patients receiving 110 zygomatic implants, the survival rate of zygomatic
implants was in excess of 96% over a period of 9 months to 5 years. This
technique resulted in a stable and predictable prosthetic reconstruction.
Clin Implant Dent Relat Res. 2009 Sep 29. [Epub ahead of print]
Soft Tissue Conditions and Marginal Bone Changes around Immediately Loaded Implants Inserted in Edentate Jaws Following Computer Guided Treatment Planning and Flapless Surgery: A >/=1-Year Clinical Follow-Up Study.
Komiyama A, Hultin M, Näsström K, Benchimol D, Klinge B.
Ph.D. student, Karolinska Institutet, Department of Dental Medicine, Division of
Periodontology, Huddinge, Sweden;
Background: Evaluation of the clinical conditions following computer guided
treatment planning and flapless surgery is still limited. Objectives: The
objective was to evaluate the soft tissue conditions and marginal bone changes
after 1 year of function around immediately loaded implants inserted in edentate
jaws following computer guided treatment planning and flapless surgery. Material
and Methods: Twenty-nine edentate jaws (19 maxillae, 10 mandibles) treated with
165 implants using the Teeth-in-an-Hour protocol were included. In these
patients, peri-implant soft tissue conditions and radiographic marginal bone
changes were evaluated after >/=1 year of functional loading (mean: 19 months).
Results: The mean probing depth at case level was 2.6 mm (SD: 0.6). Bleeding on
probing was recorded as a mean of 81.9% (SD: 23.0). Plaque index showed a wide
range of 0-100%. The mean marginal bone change of measured sites evaluated on
intraoral radiographs was -1.2 mm (SD: 1.4). A marginal bone loss more than 1.5
mm or 2.0 mm was observed in 42% and 27% of the measured sites, respectively. A
pressure-like-ulcer was found in 9 cases. Implants with marginal bone loss of
>1.5 mm were more frequently observed in cases with an ulcer than cases where no
ulcer was found. Conclusion: Although the mean marginal bone loss after function
in the present study was within the range of other reports presenting mean bone
loss data after immediate implant loading, our patients showed a wide range of
bone loss with several sites, where the bone loss was greater than the commonly
used successful level (>1.5 mm).
Med Oral Patol Oral Cir Bucal. 2009 Mar 1;14(3):E141-5.
CAD / CAM dental systems in implant dentistry: update.
Fuster-Torres MA, Albalat-Estela S, Alcañiz-Raya M, Peñarrocha-Diago M.
Master of Oral Surgery and Implantology, Barcelona University, Spain.
CAD/CAM systems (computer-aided design / computer aided manufacturing) used for
decades in restorative dentistry have expanded its application to implant
dentistry. This study aimed to look through CAD/CAM systems used in implant
dentistry, especially emphasizing implant abutments and surgical templates
manufacturing. A search of articles published in English at Medline and Scopus
databases at present was conducted, introducing "dental CAD/CAM" , "implants
abutments" and "surgical guide CAD/CAM" as key words. These systems consist of
three components: 1) data capture using optical systems or laser scanning, 2) CAD
for the design of the restoration, and 3) CAM to produce the restoration through
the information generated by computer. CAD/CAM abutments present the advantages
of being specific to each patient and providing a better fit than the rest of
abutments, in addition to being much more tough as they employ materials such as
titanium, alumina and zirconium. In order to improve accuracy during implant
placement we use stereolithography to manufacture CAD/CAM surgical templates.
Using this method, minimally invasive surgery is performed without a flap, and
the prosthesis is delivered, achieving immediate functional loading to the