Syndrompatienten im Rahmen der kieferorthopädischen Frühbehandlung von Säuglingen mit Lippen-Kiefer-Gaumen-Spalten

Zusammenfassung Die kieferorthopädische Säuglingsbehandlung widmet sich schwerpunktmäßig Neugeborenen mit orofazialen Spaltbildungen und Kindern mit Syndromen, vornehmlichDown-Syndrom. Über 100 Dysmorphiesyndrome können mit Spaltbildungen einhergehen.An klinischen Beispielen (Robin-Syndrom,Stickler-Syndrom) wird die Problematik der Syndromdiagnostik umrissen und an einem Fall (orofaziodigitales Syndrom) der Beitrag des in der Spaltfrührehabilitation tätigen Kieferorthopäden zur Syndromidentifikation aufgezeigt.

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Summary The orthodontist's early orthopaedic treatment of the newborn focuses on cleft palate infants and children withDowns syndrome. In more than 100 malformation syndromes, orofacial clefting occurs. The problem of syndrome diagnosis is discussed by way of clinical examples (Robin-syndrome,Stickler-syndrome).A case of oro-facial digital syndrome serves to demonstrate the orthodontists contribution to syndromic diagnosis in early cleft rehabilitation.

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Résumé Le traitement orthodontique précoce de nourrissons se voue dans le plus grand nombre des cas aux nouveaunés atteints de malformations orofaciales et aux enfants souffrant de syndromes, surtout du syndrome deDown (mongolisme). La formation de fentes peut être accompagnée de plus de 100 syndromes de malformations.La problématique du diagnostic de syndromes (séquence deRobin et syndrome deStickler) est esquissée à titre d'exemples cliniques et l'apport que l'orthodontiste s'occupant de la rééducation précoce de fentes labiomaxillaires peut faire à l'indentification de syndromes est mis en évidence à propos d'un cas spécifique (syndrome oro-facio-digital).

     

Cephalometric appraisal of patients treated with fixed lingual orthodontic appliances: Historic review and analysis of cases

In the first part of this article, a retrospective look was taken of evolvement and progression in design of the lingual fixed orthodontic appliance. The second part is a retrospective study of treated lingual cases. By the use of standardized cephalometric radiographs, selected treatment parameters were analyzed:--namely, bite opening, changes in mandibular position, inclination, torque and intrusion of incisors, and soft-tissue effects. For the clinician who uses this treatment modality, the most significant effects are the bite opening, intrusion of the mandibular incisors (particularly in extraction cases), and limited reduction of lower lip protrusion. The mandibular plane angle and torque and inclination of incisors did not follow a consistent and predictable pattern. On the basis of the study's findings, it is suggested that lingual fixed appliance therapy is a useful supplement to our treatment modalities; good results are both realistic and possible.     

The effect of public or private management on patients with temporomandibular joint pain dysfunction

Australians may receive free dental treatment via the public sector if they have a health care card but otherwise must seek treatment via the private sector. These two modes of dental delivery have different objectives, facilities, and patient populations. Two groups of patients, one public and one private, who presented to the same clinicians with temporomandibular joint dysfunction were studied. There were differences in age, numbers of natural teeth and some psychological features. However, the outcome to simple non-surgical management resulted in similar levels of successful treatment.     

The evolution of the complete denture base. Theories of complete denture retention — A review. Part 1

The history of denture base materials and the accompanying development of impression techniques are traced from the earliest times to the present day (Part 1) as a prelude to a study (Part 2–4) of the various theories that have been advanced to explain retention of the base without mechanical support. These theories are critically reviewed and tabulated in chronological order. Some areas for further investigation are identified.     

A radiographical classification of Stafne's bone cavity

So-called Stafne's bone cavity of the mandible were detected by panoramic radiography in 24 patients seen at the Second Department of Oral and Maxillofacial Surgery, Meikai University Hospital, and five associated hospitals. Unilateral and asymptomatic, all lesions were situated near the angle of the mandible, except for the one case that involved the anterior portion of the mandible. The mean age of the patients was 53 years with a range of 31 to 78 years, and included 22 men and 2 women. In this report, radiographic interpretation of the lesion was done, and a radiographic classification was made as follows:

1. (Indentation type): The inferior border of the mandible is involved.
2. (Medium type): The lesion is situated above the inferior border of the mandible but below the mandibular canal.
3. (Deviation type): Deviation of the mandibular canal is suspected.
4. (Anterior type): The radiolucency is located in the anterior portion of the mandible.

     

Parallel bonded cast attachments for removable partial dentures

The original design of a semi-precision extra-coronal attachment for partial dentures is illustrated, and its fabrication in a cast non-precious bondable alloy is described. A step-by-step method is also described of bonding multiple attachments in parallel for the retention and support of removable partial dentures. Clinical cases are illustrated. The results of trials indicate that the method is clinically viable and, in selected cases, appears to offer distinct advantages over existing retention systems.     

Microleakage Evaluation in Amalgam Restorations Used with Bases

Marginal leakage in amalgam restorations often precedes the development of secondary caries. One potential way to improve the marginal seal of such restorations, and thus minimize the risk of carles development, is to apply a glassionomer base prior to amalgam placement.
This study compared microleakage resistance among amalgam restorations placed with and without light-cured glass-ionomer base materials. Preparations were made in extracted human molar teeth. Four groups were studied, including copal varnish, which was used as a control. All specimens were restored with amalgam. Results indicated significantly greater leakage at the cavity wall/base interface for restorations with a copal varnish cavity liner than for those with a glass-ionomer base. Leakage differences among bases were also found at the amalgam/base interface. Best results were obtained with a dual-cure resin-based system. These samples showed minimal leakage at both the cavity wall/base and the base/amalgam interfaces. These findings suggest that light-cured glass-ionomer bases can be effective in the prevention of microleakage in amalgam restorations.     

Ameloblastoma in the interalveolar septum: Report of five cases

Five cases are described of patients with a histopathological diagnosis of ameloblastoma located in the interalveolar septum. The results were:

Static frictional force and surface roughness of nickel-titanium arch wires

Surface roughness and static frictional force resistance of orthodontic arch wires were measured. Nine nickel-titanium alloy arch wires were studied. One beta-titanium alloy wire, one stainless steel alloy wire, and one cobalt-chromium alloy wire were included for comparison. Arithmetic average roughness in micrometers was measured with a profilometer. Frictional force resistance was quantified by pushing wire segments through the stainless steel self-ligating brackets of a four-tooth clinical model. The cobalt-chromium alloy and the nickel-titanium alloy wires, with the exception of Sentalloy and Orthonol, exhibited the lowest frictional resistance. The stainless steel alloy and the beta-titanium alloy wires showed the highest frictional resistance. The stainless steel alloy wire was the smoothest wire tested, whereas NiTi, Marsenol, and Orthonol were the roughest. No significant correlation was found between arithmetic average roughness and frictional force values.