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PubMed2005

Infrared laser light reduces loading time of dental implants: a Raman spectroscopic study.

OBJECTIVE: The aim of this study was to assess, through near-infrared Raman spectroscopy (NIRS), the incorporation of hydroxyapatite of calcium (CHA; approximately 960 cm(1))--on the healing bone around dental implants submitted or not to low-level laser therapy (LLLT) (lambda830 nm). BACKGROUND DATA: The process of maturation of the bone is important for the success of dental implants, as it improves the fixation of the implant to the bone, allowing the wearing of a prosthesis. LLLT has been suggested as a mean of improving bone healing because of its biomodulatory capabilities. METHODS: Fourteen rabbits received a titanium implant on the tibia; eight of them were irradiated with lambda830-nm laser (seven sessions at 48-h intervals, 21.5 J/cm(2) per session, 10 mW, phi approximately 0.0028 cm(2), 85 J/cm(2) treatment dose), and six acted as control. The animals were sacrificed at 15, 30, and 45 days after surgery. Specimens were routinely prepared for Raman spectroscopy. Twelve readings were taken on the bone around the implant. RESULTS: The results showed significant differences in the concentration of CHA on irradiated and control specimens at both 30 and 45 days after surgery (p < 0.001). CONCLUSION: It is concluded that LLLT does improve bone healing, and this can be safely assessed by Raman spectroscopy.

Animals↗

PubMed1991

Subgingival bacteria associated with hydroxylapatite-coated dental implants: morphotypes and trypsin-like enzyme activity.

This study investigated the colonization of teeth and hydroxylapatite-coated dental implants by different groups of oral bacteria. Periodontal and gingival health were assessed and subgingival plaque samples were taken. Bacterial morphotypes in subgingival plaque samples were enumerated and expressed as percent of bacteria counted, and presence of trypsin-like enzymes was detected by hydrolysis of benzoyl-arginine naphthylamide (BANA). For both pooled and separate implant and teeth data, positive correlations were found between pocket depth and both BANA hydrolysis and percent spirochetes, and a negative correlation was found between pocket depth and percent cocci. With one exception, analysis of variance revealed no significant differences between implants and teeth for presence of bacterial morphotypes when considering both periodontal and gingival health.

Adult↗

PubMed2006

Surgical planning and prosthesis construction using computed tomography, CAD/CAM technology, and the Internet for immediate loading of dental implants.

UNLABELLED: This report describes a protocol that uses computer technology and medical imaging to virtually place anterior and posterior dental implants and to construct a precise surgical template and prosthesis, which is connected at the time of implant placement. This procedure drastically reduces patient office time, surgical treatment time, and the degree of post-treatment recovery. Patients with an edentulous arch or a partially edentulous area had a denture with radiopaque markers constructed for computed tomography (CT) scans of the appropriate jaw. The CT images, having acquisition slices of 0.4 mm, are transposed in a three-dimensional image-based program for planning and strategic placement of dental implants. After virtual implant placement on the computer, the surgical treatment plan is sent to a manufacturing facility for construction of the surgical template. The manufactured surgical components and surgical template arrive on the clinical site. From the surgical template, the dental laboratory retro-engineers the master cast, articulates it with the opposing dentition based on a duplicate of the scanning denture, and creates the prosthesis. Using the surgical template, minimally invasive surgery is performed without a flap, and the prosthesis is delivered, achieving immediate functional loading to the implants. Minor occlusal adjustments are made. The total surgical treatment time required is typically between 30 and 60 minutes. Postoperative symptoms such as pain, swelling, and inflammation are dramatically reduced. CLINICAL SIGNIFICANCE: Identification of the bone in relationship to the tooth position via three-dimensional CT prior to surgery allows the clinician to precisely place implants. Computer-aided design/computer-assisted manufacture technology using the three-dimensional images allows for fabrication of the surgical template. This is a significant advancement in implant dentistry and promotes interdisciplinary approaches to patient treatment. The implant surgeon and restorative dentist can agree upon implant locations and screw access locations prior to the surgical episode.

Journal Article↗

PubMed2005

Evolution of a dental implant practice. The Camlog implant system.

After extensive experience with a variety of implant systems dating back to the late 1960s, the author has begun placing Camlog implants, developed by Dr. Axel Kirsch. The design of this system eliminates the risk of rotation and screw-loosening, while at the same time offering extraordinary ease of use. The treatment of three patients with Camlog implants is described.

Aged↗

PubMed2005

7-year follow-up of 93 immediately loaded titanium dental implants.

Recently, several experimental and clinical investigations found that immediately loaded implants obtained satisfactory levels of osseointegration with high success percentages. Only a few long-term studies of immediately loaded implants have been reported in the literature. The aim of this study was a 7-year clinical and radiographic follow-up of 93 immediately loaded dental implants in human patients. Eleven patients were consecutively enrolled in this study. A total of 7 full and 9 partial edentulous arches were rehabilitated. Patients presented a completely edentulous mandible (n=6), a completely edentulous maxilla (n=1), mandibular posterior edentulous areas (n=5), or a posterior maxillary edentulous area (n=1). Patients were rehabilitated with a bar and an overdenture (n=4), a provisional prosthesis of 3 to 12 elements (n=11), or a metal-ceramic bridge of 10 elements (n=1). A total of 93 implants were inserted and loaded within a 24-hour time frame. Six implants failed in the first year after loading. No more failures were observed in the following 6 years, and all the other implants were well integrated from a clinical and radiographic point of view. The cumulative success rate at 7 years was 93.5%, and the prostheses survival rate was 98.5%. The mean marginal bone loss was 0.6 mm after the first year and 1.1 mm at the 7-year evaluation. Primary stability is one of the most important parameters in immediately loaded implants because it avoids micromotion at the bone-implant interface. Four of the 6 failures in our patients occurred in partially edentulous patients; an excessive load applied to these small bridges could be the reason for the failure. Also, the bone quality is important, for 3 of our failed implants had been inserted in D3 bone. Our clinical and radiographic results have shown that these immediately loaded implants have remained osseointegrated for a long period. Our results point to the possibility of using the immediate loading technique in selected and well-informed cases.

Adult↗

PubMed1977

An evaluation of porous alumina ceramic dental implants.

The fabrication, characterization, and clinical results of porous rooted alumina dental implants in animals are presented. Failures of all implants occurred in less than six months and were attributed to the presence of microporosity on the crown and cervical portion of the implant which prevented the establishment of an effective biological seal between the oral cavity and the alveolus.

Aluminum↗

PubMed2006

[Maxillofacial growth and dental implants in the maxillary anterior region].

Single tooth replacement with a dental implant is an increasingly popular solution in patients with loss of an upper anterior tooth. There is a risk, however, of placing the implant prematurely in youths. In a case series the effects of residual maxillary growth on the results of implant treatment in the anterior maxillary region were measured. The results confirm findings from other studies on this subject and indicate that cessation and degree of vertical growth are unpredictable. This may result in infraposition of the implant and lead to periodontal bone loss around the implant region and its neighbouring teeth. Clinicians should be aware of this and inform their patients that these changes may eventually compromise the aesthetic result of the treatment.

Adolescent↗

PubMed2002

Dental implant jurisprudence: avoiding the legal failures.

The law measures the quality of dentistry by the "standard of care" as defined by the courts. The ultimate judges of the facts in a malpractice suit are usually juries made up mostly of lay people. Ignorance of the legal requirements for dentistry, and specifically dental implants, unnecessarily exposes today's dental health care provider to such suits. However, with a reasonable understanding of the legal issues and requirements surrounding the standard of care, a dentist may avoid becoming embroiled in a malpractice claim.

Clinical Protocols↗

PubMed2002

Retrieval and replacement of a malpositioned dental implant: a clinical report.

This clinical report describes the retrieval of a malpositioned mandibular implant with a severe lingual inclination. A replacement implant was inserted with an emphasis on its relationship with the maxillary antagonist, resulting in a buccal inclination of approximately 10 degrees. The treatment review highlights the importance of thorough communication among all members of the dental implant team.

Adult↗

PubMed1987

The evaluation of the interface between bone and a bioceramic dental implant.

Methods for evaluating the interface between bone and an experimental dental implant have been analyzed. The material studied was a titanium implant coated with a mixture of alumina and titanium dioxide by means of a plasma-jet system with the dog as the animal model. The evaluations were made on two levels: (1) in vivo, by analyzing radiographs of the peri-implant zone with a video display computer (2) in vitro, after explantation, by analyzing vertical and horizontal sections of the sample with an optical and a scanning electron microscope, and by a video display computer analysis of the microradiographs of these sections.

Aluminum Oxide↗

PubMed2005

Aesthetic versus surgical success of single dental implants: 1- to 9-year follow-up.

Anterior maxillary implantation is a challenging treatment. The authors examined the aesthetic and surgical success of a single dental implant in the anterior by studying 52 implants with a mean follow-up of 37.5 months. Marginal bone loss (MBL), aesthetic parameters, and examiners' satisfaction from the aesthetic outcome were examined. The total surgical survival and success rates as well as the average examiner's aesthetic satisfaction and success rates are presented. Implantation in the anterior has high surgical survival and success rates, as well as a considerably high aesthetic success rate. The high surgical success and survival rates cannot, however, predict aesthetic success.

Adolescent↗

PubMed1989

Investigation of the surface texture of hydroxylapatite-coated dental implants by means of SEM.

In this experiment hydroxylapatite-coated dental implants were submitted to a wear test in order to study their resistance to toothbrushing. After 20,000 double brush strokes the coating had disappeared in some places. It was concluded that the wear resistance of the coating was not good enough to withstand longer brushing periods.

Dental Implants↗

PubMed1994