The Authors, in the light of available data in the published literature and using their own personal experience as a basis, examine the relationship existing between orthodontia and periodontology, giving prominence to the more immediate and dynamic aspects of the comparison. An obvious cause-and-effect relationship often links the position of the teeth and the periodontal pathology; if this relationship is understood by the orthodontist, it can guide him in his choice of treatment, both where curative treatment is required but also, and more importantly, where prevention can be provided. Emphasis is placed on how serious can be the damages caused to the periodontium where the monitoring of the bacterial plaque and of the inflammation which it brings about is not sufficiently constant. Certain programs of treatment are proposed which, using orthodontal methods, can make a substantial contribution to solving periodontal problems, the kind of problems which are hard to control when traditional methods are used.

Adolescent↗

PubMedDate not supplied

[Transposition of upper permanent canine and premolar. Orthodontic, surgical and conservative solutions].

According to the bibliography and their personal experiences, the Authors take into account the transposition of the canine and first premolar, in order to discuss their causes and consider the different therapeutical possibilities. Three clinical cases are here treated.

Adolescent↗

PubMedDate not supplied

[Biochemical study of the dental pulp in the calf].

A biochemical study of dental pulp of calves has been performed concerning: a) peroxydability b) A, E, C vitamins content c) glutation (GSH) content d) presence of paramagnetic compounds e) phosphorylation ratio The dental pulp from incisors of 5-months-old calves has been preserved. Immediately after decapitation the pulp was immersed in liquid nitrogen. Chromatographic (HPLC) and spectroscopic (NMR-ESR) techniques have been used. GSH in dental pulp are present and dosable (4.56 +/- 0.08 n moles/mg prot.) and GSSG (1.05 +/- 0.01 n moles/mg prot.). Because of blood traces in the extracted pulps, the AA. have determined the hemoglobin (Hb) dosage and GSH of erythrocytic derivation (Fig. 1). After deduction of GSH of erythrocytic derivation, the GSH really present in the pulp was 4.41 n moles/mg prot. and the GSSG was 0.90 n moles/mg prot. Peroxydability of the dental pulp has been evaluated with Lowry method with dental pulp homogenate and rat liver homogenate (see Table 1). The ESR spectre shows 4 resonances with the following values: g. 2.24-2.04-2.00-1.97; there are some free intermediary radicals (gr.-2.00) (Fig.2). The NMR spectre shows the presence of ATP (0.22 n moles/g) of inorganic phosphate (16.58 n moles g) (Fig.3). The pulp seems to have a lot of antioxidant factors. The next researches will be to study E, A and C vitamins concentrations. This high presence of GSH and GSSG may be an embryonic peculiarity.

Aged↗

PubMedDate not supplied

[Splinting technique for traumatic luxation of anterior permanent teeth].

Extrusive luxations of both, upper and lower incisors, represent a frequent event in dental traumatology. The Authors present some cases in which elastic splints have been used. In fact recent researches show that, even soon after a traumatic event, is not indicated to immobilize teeth with rigid fixed splints because they don't allow any dental function. It is therefore preferable the use of elastic splints for 2-4 weeks, instead of rigid splints for long periods. The Authors then describe the techniques, the methods and the radiographic controls and pulp tests used in this kind of traumatic pathology, showing the positive long term results obtained by using elastic splints instead of rigid splints which often present as result root resorptions or pulp necrosis. In fact with elastic splints is possible to replace and maintain luxated teeth, allowing at the same time a certain function of teeth and their support tissues.

Dental Pulp Necrosis↗

PubMedDate not supplied

[Dental trauma: coronal fractures of permanent incisors. A new technique of bonding fragments].

The coronal fractures of the upper incisors for traumatic injuries represent the 8% of the total dental trauma. The use of new dentinal adhesive have permitted to obtain new interesting development in dental traumatology and dental esthetic, like the possibility of the utilisation of the dental fragment, of the incisor broken for a trauma. The new dentinal adhesive is the Gluma (Bayer). The Authors describe the technique, the times, some particulars and step by step all the method to obtain good final results. Finally are presented all the advantages compared to the traditional methods with the composites materials.

Adhesives↗