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Front Teeth (front + tooth)

Distribution by Scientific Domains

Medical Sciences	83%

Selected Abstracts

Dental erosion in Cuban children associated with excessive consumption of oranges

EUROPEAN JOURNAL OF ORAL SCIENCES, Issue 2 2000
Walter Künzel
Marked erosion at the mesial edges of upper front teeth was observed during an examination of Cuban children. The preferential erosion of mesial edges produced characteristic V-shaped defects on upper central incisors, and the aim of the present study, carried out on 12-yr-old children (N=1010) in 10 communities in the Province of Havana was to establish the frequency of dental erosion and explain its occurrence. The symmetrical erosion of teeth 11 and 21 (excluding crown injuries and attrition) were clinically classified into four grades: 0.5=objectionable; 1=abnormal mesial shortening of incisal edges; 2=V-shaped defect of cutting edges; 3=exposure of dentine and extension of the erosive defect to the lateral incisors. In four of the communities, children did not show or rarely showed incisal erosion. In the other six communities, the frequency was surprisingly high (16.6,40.9%). Overall, 17.4% of children exhibited erosion, and the occurrence was significantly higher in girls (20.7%) than in boys (15.0%). The typical V-shaped pattern of erosion seems to be a consequence of the manner in which citrus fruits are eaten. There was also a positive correlation between the frequency of dental erosion and the proximity of citrus plantations, which presumably related to the extent of (daily) orange consumption. [source]

Labial piercing resulting in gingival recession.

JOURNAL OF CLINICAL PERIODONTOLOGY, Issue 10 2002
A case series
Abstract Several complications of oral piercing have been recently reported in the medical and dental literature. Even though few people have had problems related to oral piercing, dentists should familiarise themselves with the potential associated oral and dental problems. We present three cases of young people with gingival recession in the mandibular incisor area related to labial piercing. The clinical examination and the dental history of the three cases revealed the relationship between the gingival recession and the presence of labial piercing. In particular, a stud in the lower lip was held in place by a metal disk on the inner labial mucosa in each case. The metal disk was in close proximity to the mandibular front teeth and it would appear that it was responsible for local trauma and recession. This case series reinforces previously reported concerns regarding the practice of piercing and the role of the dentist, both in advising patients with oral or facial piercing and in the treatment of related oral, gingival and dental problems. Zusammenfassung Durchstochene Lippen führten zu einer Retraktion Gingiva. Eine Fallserie In jüngerer Zeit wurden in der allgemein- und zahnmedizinischen Literatur eine Reihe von Komplikationen nach Durchstechen des Mundgewebes berichtet. Obwohl nur wenige Menschen Probleme nach durchstochenen Lippen bekamen, sollten sich Zahnärzte dennoch mit den potentiell mit dieser Praxis verbundenen Zahnproblemen beschäftigen. Wir stellen hier drei Fälle von jungen Menschen mit einer Retraktion der Gingiva im Bereich der mandibulären Schneidezähne vor, die auf ein Durchstechen der Lippen zurückzuführen ist. Die klinische Untersuchung und die Zahnanamnese der drei Fälle zeigte eine Verbindung zwischen der Retraktion der Gingiva und den durchstochenen Lippen. In jedem der Fälle wurde ein Stecker in der Unterlippe durch eine an der inneren Schleimhaut der Unterlippe anliegende Metallscheibe festgehalten. Die Metallscheibe lag in der direkten Umgebung der mandibulären Schneidezähne und wir gehen davon aus, das diese Scheibe für das lokale Trauma und die Retraktion der Gingiva verantwortlich war. Diese Fallserie unterstützt an früherer Stelle ausgedrückte Besorgnisse in Bezug auf das Durchstechen der Lippen und die Rolle des Zahnarztes, sowohl bei der Beratung des Patienten in Bezug auf das Durchstechen der Lippen bzw. anderer Gesichtsteile, als auch bei der Behandlung damit verbundener oraler, gingivaler oder dentaler Probleme. Résumé Piercing labial entraînant une récession gingivale. Série de cas La littérature médicale et dentaire a récemment fait état de plusieurs complications dues au piercing buccal. Bien que peu de personnes aient eu des problèmes liés au piercing buccal, les dentistes devraient se familiariser avec les potentielles complications buccales et dentaires qui lui sont associées. Nous exposons les cas de trois jeunes personnes présentant une récession gingivale dans la région incisive mandibulaire, en relation avec un piercing labial. L'examen clinique et le passé dentaire des trois cas ont mis en évidence la relation entre la récession gingivale et la présence d'un piercing labial. En particulier, dans chaque cas, un clou placé dans la lèvre inférieure était maintenu en place par un disque métallique situé sur la muqueuse labiale interne. Ce disque était à proximité des dents mandibulaires antérieures, et il semblerait qu'il ait étéà l'origine d'un traumatisme local et d'une récession. Cette série de cas renforce les préoccupations déjàévoquées dans le passé sur la pratique du piercing, ainsi que sur le rôle du dentiste, à la fois pour conseiller les patients sur le piercing buccal et facial et pour traiter les problèmes dentaires buccaux et gingivaux associés. [source]

THE ROLE OF AUDITORY CUES IN MODULATING THE PERCEIVED CRISPNESS AND STALENESS OF POTATO CHIPS

JOURNAL OF SENSORY STUDIES, Issue 5 2004
MASSIMILIANO ZAMPINI
ABSTRACT We investigated whether the perception of the crispness and staleness of potato chips can be affected by modifying the sounds produced during the biting action. Participants in our study bit into potato chips with their front teeth while rating either their crispness or freshness using a computer-based visual analog scale. The results demonstrate that the perception of both the crispness and staleness was systematically altered by varying the loudness and/or frequency composition of the auditory feedback elicited during the biting action. The potato chips were perceived as being both crisper and fresher when either the overall sound level was increased, or when just the high frequency sounds (in the range of 2 kHz,20 kHz) were selectively amplified. These results highlight the significant role that auditory cues can play in modulating the perception and evaluation of foodstuffs (despite the fact that consumers are often unaware of the influence of such auditory cues). The paradigm reported here also provides a novel empiric methodology for assessing such multisensory contributions to food perception. [source]

Spacing and crowding among African and Caucasian children

ORTHODONTICS & CRANIOFACIAL RESEARCH, Issue 2 2008
EA Mugonzibwa
Structured Abstract Authors,,, Mugonzibwa EA, Eskeli R, Laine-Alava MT, Kuijpers-Jagtman AM, Katsaros C Objective,,, To determine spacing and crowding according to ethnic group, gender and dental emergence stage among Tanzanian African and Caucasian children. Design,,, Cross-sectional epidemiological clinical study. Setting,,, A total of 869 African (428 boys, 441 girls) and 706 Caucasian (319 boys, 387 girls) school children, aged 3½,16 years. Main Outcome Measures,,, Comparison of spacing and crowding between African and Caucasian children according to gender and dental emergence stage. Results,,, Spacing was more often found in the maxilla, while crowding was more common in the mandible. Only during the transition of the maxillary permanent front teeth was there significantly more spacing in Caucasians. No gender differences were found. In both samples spacing decreased during later emergence stages. Crowding was more often found in Caucasian children than in African children. In Caucasian children the frequency of crowding increased with advanced emergence stages, while for Africans the trend was not consistent. Conclusion,,, When planning resources for orthodontic treatment for different populations as well as planning treatment for individuals, ethnic background and emergence stage of the dentition need to be considered. [source]

Interventions for treating traumatized permanent front teeth: avulsed (knocked out) and replanted

AUSTRALIAN DENTAL JOURNAL, Issue 2 2010
P Day
Background:, Dental trauma is common. One of the most severe injuries is when a permanent tooth is knocked completely out (avulsed) of the mouth. In most circumstances the tooth should be replanted as quickly as possible. There is uncertainty on how best to prepare teeth for replantation. Objectives:, To compare the effects of a range of interventions for managing traumatized permanent teeth with avulsion injuries. Search strategy:, The Cochrane Oral Health Group's Trials Register (to 28th October 2009); CENTRAL (The Cochrane Library 2009, Issue 4); MEDLINE (1950 to October 2009); EMBASE (1980 to October 2009); http://www.clinicaltrials.gov/;www.controlled-trials.com/ and reference lists of articles were searched. There were no language restrictions. Selection criteria:, Only randomized controlled trials (RCTs), that included a minimum follow-up period of 12 months, for interventions for avulsed and replanted permanent teeth were considered. Data collection and analysis:, Two review authors independently extracted data and assessed trial quality and the risk of bias in studies to be included. Main results:, Three studies, involving a total of 162 patients and 231 teeth were identified. Study one (with a high risk of bias) investigated the effect of extra-oral endodontics. This showed no significant difference in radiographic resorption compared with intra-oral endodontics provided at week 1 for teeth avulsed for longer than 60 minutes dry time. Study two (which had a moderate risk of bias) investigated a 10-minute soaking in thymosin alpha 1 prior to replantation and then its further use as a daily gingival injection for the first 7 days. They reported a strong benefit at 48 months (14% with periodontal healing in the control group versus 77% for the experimental group). Study three (with a high risk of bias) investigated a 20-minute soaking with gentamycin sulphate (4 × 107 U/L) for both groups prior to replantation and then the use of hyperbaric oxygen daily in the experimental group for 80 minutes for the first 10 days. They reported a strong benefit at 12 months (43% periodontal healing versus 88% for the experimental group). There was no formal reporting of adverse events. Authors' conclusions:, The available evidence suggests that extra-oral endodontics is not detrimental for teeth replanted after more than 60 minutes dry time. Studies with moderate/high risk of bias indicate that soaking in thymosin alpha 1 and gentamycin sulphate followed by hyperbaric oxygen may be advantageous. However, they have not previously been reported as interventions for avulsed teeth and need further validation. More evidence with low risk of bias is required and, with the low incidence of avulsed teeth, collaborative multicentre trials are indicated. Plain language summary:, Treatments for managing knocked out and replanted front teeth. Injuring your front teeth during childhood is common. One of the most severe injuries occurs when the tooth is knocked totally out of the mouth (avulsed). Often the best option is to replant the tooth as quickly as possible. This is true only for permanent teeth. Once replanted the tooth can heal in two ways if managed correctly. Ideally the ligament around the root reforms and the tooth can be expected to last as long as any other tooth; this is known as ,periodontal healing'. When there is too much damage to the ligament, healing occurs by bony replacement and the tooth is replaced by bone and lost over a few years. This is called ,bony healing'. Bony healing causes significant problems in the medium term for children and treatments for this are the subject of a different Cochrane review. A missing front upper tooth or teeth, as a result of not replanting an avulsed tooth or as a treatment for bony healing, can have a major effect on dental and facial ,good looks'. This can affect the individual's self-esteem and general social interaction, as well as how others think and see them. This Cochrane review investigated what treatments encourage the tooth to repair by periodontal healing. Three studies were found. The benefits of these treatments require further investigation before specific medicaments can be advised. This is because the studies had weakness in their design which may have influenced the benefits they found. The following general treatment principle can be concluded which reinforces current treatment guidelines: For teeth with little chance of periodontal healing, a root canal treatment can be carried out before the tooth is replanted without further detrimental effects. [source]