maxilla, long-term clinical trials should routinely include objective esthetic
criteria that comprehensively embrace the pertinent elements of "pink and white
esthetics" in the form of readily used indices.
J Craniofac Surg. 2009 Nov;20(6):2143-9.
Clinical viability for immediate loading of dental implants: part II—treatment alternatives.
Goiato MC, Pellizzer EP, Barão VA, dos Santos DM, de Carvalho BM, Magro-Filho O, Garcia IR Jr.
UNESP--Araçatuba Dental School, Dental Materials and Prosthodontics, José
Bonifácio, 1193, Araçatuba, São Paulo 16015-050, Brazil. email@example.com
The treatment with implants aims to obtain a direct interface between bone and
implant. The implant is kept load-free during 4 to 6 months in the 2-stage
procedure, which is considered a requisite for osseointegration. However, this
period is based on empirical principles and uncomfortable for patient. So, the
immediate loading protocol was suggested to submit implants to occlusal function
after placement. This protocol has been applied for several conditions of
edentulism. The aim of this study was to evaluate the treatment alternatives for
immediate loading of complete and partial edentulous patients. In general, the
studies have demonstrated high previsibility for rehabilitation of complete
edentulous arches with full-arch, implant-supported prosthesis. The
rehabilitation with immediate loading for maxillary overdenture is questionable
because there is no longitudinal study in literature. The studies with partial
edentulous arches have demonstrated high success rates for implants placed in the
mandibular and maxillary anterior region. Additional care is recommended for
posterior region mainly in the maxillary arch, and further studies are suggested
to corroborate this treatment.
J Periodontol. 2009 Sep;80(9):1393-8.
Immediate versus one-stage restoration of small-diameter implants for a single missing maxillary lateral incisor: a 3-year randomized clinical trial.
Degidi M, Nardi D, Piattelli A.
Dental School, University of Chieti-Pescara, Chieti, Italy.
BACKGROUND: The aim of this study was to compare the bone loss pattern and soft
tissue healing of immediately versus one-stage loaded 3.0-mm-diameter implants in
cases involving a single missing lateral maxillary incisor. METHODS: Sixty
patients with a missing lateral incisor in the maxilla were randomized to one of
the treatments: 30 patients in the immediate-restoration group and 30 patients in
the one-stage group. All implants were placed in healed sites and had to be
inserted with a torque >25 Ncm. The implants in the immediate-restoration group
were fitted with a non-occluding temporary crown on the day of surgery. Both
groups received a full occluding final crown 6 months after surgery. Mean
marginal bone loss, probing depth, and bleeding on probing were assessed at 6-,
12-, 24-, and 36-month follow-up examinations by a masked examiner. RESULTS:
Sixty 3.0-mm-diameter implants were placed between July 2003 and February 2006;
27 (45.0%) were in men, and 33 (55.0%) were in women. All implants
osseointegrated and were clinically stable at the 6-month follow-up. No
statistically significant differences were observed for bleeding or plaque index.
No implant fractures occurred. At the 36-month follow-up, the accumulated mean
marginal bone loss and probing depth were 0.85 +/- 0.71 mm and 1.91 +/- 0.59 mm, respectively, for the immediate-loading group (n = 30) and 0.75 +/- 0.63 mm and 2.27 +/- 0.81 mm, respectively, for the one-stage group (n = 30). There was no statistically significant difference (P >0.05) for the tested outcome measures
between the two procedures. CONCLUSIONS: In the rehabilitation of a single
missing lateral maxillary incisor, no statistically significant difference was
assessed between immediately and one-stage restored small-diameter implants with
regard to implant survival, mean marginal bone loss, and probing depth.
Three-millimeter-diameter implants proved to be a predictable treatment option in
our test and control groups if a strict clinical protocol was followed.
J Prosthet Dent. 2009 Oct;102(4):211-5.
Immediate loading and customized restoration of a single implant in the maxillary esthetic zone: a clinical report.
den Hartog L, Raghoebar GM, Stellingsma K, Meijer HJ.
Department of Oral and Maxillofacial Surgery, University Medical Center
Groningen, University of Groningen, Groningen, the Netherlands.
The replacement of a single missing anterior tooth with an implant-supported
PURPOSE: This clinical study aimed to evaluate initial, 4-months, and 1-year
stability of immediately loaded dental implants inserted according to a protocol
of lower rehabilitation with prefabricated bars. MATERIALS AND METHODS: The sample was composed of 11 edentulous patients. In each patient, 4 interforaminal implants were inserted. Immediately after implant installation, resonance frequency analysis (RFA) for each fixation was registered as well as after 4 months and 1 year with the prosthetic bar removed as it is a screwed system.
RESULTS: The clinical implant survival rate was 100%. The RFA showed an increase in stability after 4 months from 64.09 +/- 6.48 to 64.31 +/- 4.96 and 1 year, 67.11 +/- 4.37. The analysis of variance showed a statistically significant
result (P = 0.015) among implant stability quotient values for the different
periods evaluated. Tukey test results showed statistically significant
differences between 1-year results and the initial periods but there was no
statistically significant difference between initial and 4-month results (P >
0.05). CONCLUSION: These preliminary 1-year results indicate that immediate
loading of mandibular dental implants using the studied prefabricated bars
protocol is a reliable treatment as it is in accordance with the results
described in the literature for other similar techniques.