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Results for “Root Resorption”

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PubMed2002

Combined therapy of mineral trioxide aggregate and guided tissue regeneration in the treatment of external root resorption and an associated osseous defect.

BACKGROUND: The treatment of external root resorption and associated periodontal defects can be challenging to the most astute clinician. In this case report, a multidisciplinary approach was performed to treat a maxillary central incisor that presented with a sinus tract. An amalgam restoration had been placed approximately 10 years earlier to repair an area of external root resorption. METHODS: A full-thickness mucoperiosteal flap was reflected from teeth #8 to #9. Following degranulation of the area, an amalgam restoration was found on the distal root surface of tooth #8. A 2-wall osseous lesion was also associated with the distal surface of #8. The amalgam was removed and the defect was restored with mineral trioxide aggregate (MTA). The root surface was chemically conditioned with tetracycline, and the osseous defect was grafted with decalcified freeze-dried bone allograft (DFDBA) and a calcium sulfate barrier. RESULTS: An 8 mm gain in clinical attachment, as well as an increase in radiodensity, was noted on the distal surface of tooth #8 at 15 months postsurgery. The patient was also asymptomatic, with no clinical signs of inflammation present. CONCLUSIONS: A combined approach utilizing MTA for root surface repair, and DFDBA and calcium sulfate to address an associated osseous lesion, appears to be a viable modality in the treatment of chronic endodontic/periodontal lesions.

Absorbable Implants↗

PubMed2005

Detection of lingual root resorptions in the intraoral radiographs. An experimental study.

An experimental study was undertaken in an attempt 1) to describe the possibilities to detect lingual root resorptions of upper incisors in intraoral radiographs and 2) to determine the amount of reduction that is necessary in order to detect resorptions in the radiograph. The upper right central incisor was extracted from a dry skull. In a standardized way, the root was repeatedly reduced by grinding on the lingual side at an angle of 16 degrees measured from apex to the long axis of the tooth. After each reduction the tooth was replaced in the dry skull and radiographed in a standardized manner. The radiographs were placed in two different charts and at random within each chart. On two different occasions three groups of observers, 5 orthodontists, 5 pedodontists and 5 radiologists were asked to register any detected "root resorptions" on the right first and second incisors. The first chart included radiographs with a reduction of 0-3 mm and the second chart 0-6 mm. The orthodontists and pedodontists were not very consistent in their observations and false positive registrations were very frequent. The radiologists were more accurate in their observations and detected resorptions when the reduction incorporated the apex of the root at a 3 mm level. Thus, intraoral radiographs seems to be a very blunt instrument for detecting lingual root resorptions.

Humans↗

PubMed2001

Predicting and preventing root resorption: Part I. Diagnostic factors.

The purpose of this study was to determine whether it would be possible to identify pretreatment factors that will allow the clinician to predict the incidence, location, and severity of root resorption before the commencement of orthodontic treatment. The records of 868 patients who were treated with full, fixed edgewise appliances were obtained from 6 private offices; full-mouth periapical radiographs were used to accurately assess apical root resorption from first molar to first molar in both arches. The results showed that resorption occurs primarily in the maxillary anterior teeth, averaging over 1.4 mm. The worst resorption was seen in maxillary lateral incisors and in teeth with abnormal root shape (pipette, pointed, or dilacerated). Adult patients experienced more resorption than children did in the mandibular anterior segment only. Asian patients were found to experience significantly less root resorption than white or Hispanic patients. Increased overjet, but not overbite, was significantly associated with greater root resorption. There was no difference in either the incidence or severity of root resorption between male and female patients.

Adolescent↗

PubMed2005

Multiple idiopathic cervical root resorption most frequently seen in younger females.

DATA SOURCES: Medline and references of included studies were used to source articles. STUDY SELECTION: Selected articles were case reports or reviews of patients who had multiple root resorption with no systemic or local factors that may have contributed to root resorption, the resorption originating at the cemento-enamel junction of teeth and involving more than three teeth in the dentition. DATA EXTRACTION AND SYNTHESIS: Clinical, histological and historical findings are summarised for all identified patients. RESULTS: Multiple idiopathic cervical root resorption (MICRR) was an incidental finding on routine clinical and radiographic examination. There appeared to be no correlation between this type of resorption and any medical or dental finding. Radiographically, MICRR was found to begin at the cemento-enamel junction and then either progress to involve the entire cervical region or, at some point, spontaneously arrest. Those cases that progressed to involve the entire cervical region required extraction. The number of teeth that demonstrated this condition ranged from five up to 24 per patient. More teeth became involved as the condition was followed in time. There was no detectable frequency of occurrence for any particular dental region or tooth among the involved teeth. Of a total of 18 patients, 13 were females whose ages ranged from 7 to 68 years of age. Ten of the 18 patients were Caucasian. CONCLUSIONS: Multiple idiopathic cervical root resorption was found most frequently associated with younger females. This condition appeared to be of unknown aetiology and uncertain natural history.

Comment↗

PubMed1996

Effects of a doubled orthodontic force magnitude on tooth movement and root resorptions. An inter-individual study in adolescents.

The aim of this clinical and histological study was to compare the effects of two controlled, continuous forces of 50 cN (approximately 50 g) and 100 cN (approximately 100 g) on tooth movement and root resorptions. The patients, consisting of 32 individuals, 14 boys and 18 girls (mean age 13.1 years), were divided into four groups of eight individuals. The experimental periods were 4 and 7 weeks. In this investigation, designed as an inter-individual study, only the maxillary first premolar on the right side was utilized. The test tooth was buccally moved by means of a fixed orthodontic appliance. A continuous, weekly controlled force of 50 cN was applied to 16 premolars and a force of 100 cN to the remaining 16 test teeth. The force declined on average 22 per cent during the first week when 50 cN was applied and 27 per cent when 100 cN was applied. Tooth movements were studied on dental casts using a coordinate measuring machine. After 4 and 7 weeks, the tooth movements ranged between 0.5 and 3.4 mm (4 weeks) and 2.7 and 7.1 mm (7 weeks) for 50 cN and between 1.0 and 2.9 mm (4 weeks) and 2.2 and 8.3 mm (7 weeks) for 100 cN, with no significant difference when the force magnitude was doubled. Root resorptions were registered in histological sections in all experimental teeth, more frequently after application of 50 cN compared with 100 cN after 7 weeks. However, the severity of root resorption (extension and depth of resorbed root contour and size of root area on histological sections) did not differ significantly when the applied force was doubled to 100 cN. Great individual variations were noted regarding both the magnitude of tooth movement and amount of root resorption.

Adolescent↗

PubMed1994

Root resorptions in a patient with hemifacial atrophy.

Hemifacial atrophy (Parry-Romberg syndrome) is a rare but well-recognized condition. The developmental effects on facial and oral structures have been well documented in the literature. However, the etiology of hemifacial atrophy remains unknown. Previous reported alterations in tooth growth and development include delayed tooth eruption, abnormal root morphology, and malocclusion but not root resorption. This report presents the orofacial changes from hemifacial atrophy in a 22-yr-old woman and describes the occurrence of root resorptions in two regions affected by this condition. The concurrent presence of root resorptions in both the maxilla and mandible in the regions showing the most severe dental malformations points to root resorption as an additional complication of hemifacial atrophy.

Adult↗

PubMed2000

Luxation injuries and external root resorption--etiology, treatment, and prognosis.

When a tooth sustains a luxation injury, attachment damage of varying degrees will occur. In addition, necrosis of the pulp might result, thereby making the pulp space susceptible to infection. These circumstances can lead to root resorption. Treatment for root resorption includes preventing it by avoiding causes of root surface injury, minimizing initial inflammation, and reversing resorption.

Anti-Bacterial Agents↗

PubMed1988

Multiple idiopathic external root resorption. A case report.

An unusual case of multiple idiopathic external apical root resorption affecting all four quadrants, in a patient with a history of narcotic intravenous drug addiction and liver disease, is reported. The literature relating to a systemic etiology for external root resorption is briefly reviewed.

Adult↗

PubMed1990

[Rates of root resorption in orthodontically moved, periodontally affected and healthy teeth].

The aim of this SEM-study was to obtain a quantitative analysis for comparing the extent of root resorption in orthodontically treated teeth, in teeth with reduced periodontium and in healthy teeth. By using a statistically valid method the highest amount of root resorption was established in orthodontically moved teeth. The teeth with loss of attachment showed a significantly higher amount of root resorption than healthy teeth. This finding complicates orthodontic treatment in teeth with reduced periodontal attachment.

Adolescent↗

PubMed1992

Assessment of external root resorption using digital subtraction radiography.

Digital subtraction radiography was investigated for its capability to detect and quantify experimentally produced external root resorptive defects in teeth. Using a long source to object X-ray technique and E-speed film, serial radiographs of teeth with artificial lesions in a dry human skull (soft tissue simulated) were obtained. Receiver operating characteristic analysis was used to evaluate the diagnostic performance for each imaging system (conventional versus subtraction). To explore the quantitative assessment potential of digital subtraction radiography, images were produced after sequential demineralization by HCl. The acid solution was analyzed for calcium concentration by atomic absorption spectrophotometry. Three-dimensional histogram quantification for each subtracted image was performed. In overall performance for detecting experimentally produced external root resorption, digital subtraction radiography was found to be significantly superior to conventional radiography. In addition, digital subtraction radiography can provide quantification of experimentally produced external root resorptive defects.

Humans↗

PubMed1977

Orthodontic root resorption studied by electron microscopy.

The present study supports previous findings that root resorption takes place simultaneously with and after the elimination of hyalinized tissue. The cementoid layer and the more mature periodontal collagen fibers adjacent to cementum are possible barriers preventing root resorption. The microenvironment around hyalinized tissue is favorable for the introduction of hard-tissue resorbing cells. The findings show that the elimination of hyalinized tissue leads to the removal of the cementoid and the mature collagen thus leaving a raw cemental surface without a barrier. It is therefore hypothesized that such an area is readily attacked by odontoclasts. Once resorption lacunae are established, the cementum is resorbed from the rear as an undermining process. By continued orthodontic force application the resorption process will proceed even after all hyalinized tissue is eliminated. If the orthodontic force is discontinued or falls under a certain level, the resorption lacunae are repaired.

Animals↗

PubMed1989

Multiple idiopathic root resorption in monozygotic twins: case report.

Idiopathic root resorption of the permanent dentition is encountered occasionally during routine dental examinations. A case is presented of this relatively rare condition in monozygotic twins. Examination of siblings and the patients' mother did not show a resorptive process. A 6-month follow-up examination revealed the resorption to be arrested.

Adolescent↗

PubMed2004

Root resorption in chronic periodontitis: a morphometrical study.

BACKGROUND: It has been previously observed that teeth with severe chronic periodontitis experience more transient external root resorptions than teeth with less severe disease. METHODS: Sixty-six teeth diagnosed with different levels of chronic periodontitis in 48 patients were observed with a light microscope. Main characteristics of teeth with root resorptions, as well as percentages of area and volume resorbed on each radicular third of the teeth, were determined. RESULTS: Over 80% (53) of the teeth exhibited resorption: 46.67% in group 1 (slight periodontitis); 85% in group 2 (moderate periodontitis); and 93.55% in group 3 (severe periodontitis). In group 1, the average resorption length was 295.65 microm and the average area, 11,212.45 microm2. In group 2 these measures were 519.09 and 25,678.102, respectively. In group 3, the average length was 675.95 microm, and the average area 36,925.06 microm2. Except for the resorbed volume on the apical third, the other resorption percentages were higher in group 3 (severe periodontitis) and smaller in the group 1 (slight periodontitis), but the location of the largest resorption percentages varied among the three groups. CONCLUSIONS: The severity of periodontitis plays a major role in the presence and extent of transient external root resorption. In the three groups, most of the teeth showed resorptions on the apical third, but severity of periodontitis determined the location of the largest percentages of area and volume resorbed.

Adult↗

PubMed2002

Prevalence of different periapical lesions associated with human teeth and their correlation with the presence and extension of apical external root resorption.

AIM: The aim of this study was to determine the prevalence of various periapical pathologies and their association with the presence and extent of apical external inflammatory root resorption in human teeth. METHODOLOGY: One hundred and four root apices from extracted teeth with periapical lesions were examined. Semi-serial sections of soft tissue lesions were stained with HE. The lesions were classified as noncystic or cystic, each with different degrees of acute inflammation: 0, 1, 2 and 3, increasing in severity. The root apices were analysed by SEM. External root resorption was classified according to site, as periforaminal or foraminal, and the extension of the resorbed area graded in increasing area as 0, 1, 2 or 3. RESULTS: Cysts accounted for 24.5% of the samples, 84% of which were associated with marked inflammation. The most prevalent diagnosis was noncystic periapical abscess with varying degrees of severity (63.7%). Periapical granuloma was not a frequent finding. SEM analysis showed that 42.2% of the root apices had periforaminal resorption extending over 50% of their circumference. When the foraminal resorption was evaluated, 28.7% had resorption affecting >50% of the periphery. Only 8.9% of the samples showed no periforaminal or foraminal resorption. CONCLUSIONS: In the sample of extracted teeth investigated, 24.5% of the periapical lesions were cysts. Most periapical lesions (84.3%) displayed acute inflammation, whether cystic or not. Periforaminal resorption was present in 87.3% of the cases, and foraminal resorption in 83.2%. Periforaminal and foraminal resorptions were independent entities. There was no association between external root resorption and the nature of the periapical lesions.

Analysis of Variance↗

PubMed1989

[Root resorption and endodontic treatment].

Some types of tooth root resorption respond favourably to endodontic treatment. Sometimes compromising factors demand particular treatment approaches and techniques. These will be described, in connection with their genesis.

Humans↗

PubMed1987

Histometric study of root resorption on human premolars following experimental replantation.

A histometric method was applied for evaluation of root resorption in 57 experimentally replanted teeth and 22 controls. Representative axiobuccolingual sections were selected for measurement of resorptions at a magnification of x 40. The frequency of root resorption in the control teeth was low. In replanted teeth marked resorptive activity elicited by the trauma appeared after 2 wk. The extent of active resorptions increased until the third postoperative week. On an average 14% of the root periphery was affected at this stage. After the sixth postoperative week progressive cement deposition took place in the resorption lacunae. Incidental ankylosis of the periodontal membrane also occurred from this observation time but there was no increase among the long-term groups.

Adolescent↗

PubMed1989

Root resorption in autotransplanted maxillary canine teeth.

The results of the endodontic management of root resorption in 77 transplanted teeth are described. Apical bony radiolucency healed in 75 per cent of cases but the prognosis for root resorption was poorer; in only 34 per cent of cases was the resorption arrested. Various factors which might have influenced the outcome of treatment are discussed.

Adolescent↗

PubMed1995

Generalized idiopathic apical root resorption as an incidental finding in an adolescent: a case history.

Generalized idiopathic apical root resorption is an unusual finding, especially in adolescents. This report describes a case in which the root resorption was an incidental finding in a patient referred for orthodontic treatment after suffering trauma to a central incisor. It emphasizes the need for adequate clinical and radiological examination before undertaking active orthodontic treatment.

Adolescent↗